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  • This is a blue ocean slug (Glaucus atlanticus) that was washed ashore with a mass, multi-day stranding of thousands of blue bottles (Physalia utriculus). These nudibranchs are part of the rarely seen blue community of the open ocean. They prey on other animals in that community, such as Physalia utriculus, by-the-wind-sailors (Velella velella), blue buttons (Porpita porpita), and violet snails (Janthina janthina). Glaucus nudibranchs are immune to the venom of the blue bottles that they consume. They store their prey’s nematocysts and deploy them in specialized cnidosacs at the tips of their ornate cerata. Because these nudibranchs concentrate the venom of their prey, they can produce a more powerful sting than Physalia.
    glaucus-atlanticus-nudibranch-201711...tif
  • A family of sperm whales (Physeter macrocephalus) resting at the ocean surface, with the lead female holding Architeuthis giant squid in her mouth. There was a calf in this family group that was unable to dive deep for extended periods of time with the adults. It is possible that the adults were teaching the calf to consume giant squid, as the family group played with the squid for an extended period of time, with the whales shredding the squid to pieces in the process. Photographed in Ogasawara, Japan.
    sperm-whales-eating-giant-squid-phys...tif
  • Unidentified aeolid nudibranchs (Favorinus sp.) that appear to be feeding on eggs in a bubble-like egg case. The egg case may be that of a polychaete worm, or possibly a headshield slug of bubble snail (Cephalaspidea). See http://www.tonywublog.com/journal/aeolid-nudibranchs-eating-eggs-of-polychaete-worms for a discussion of this topic. Photographed in Lembeh Strait, Indonesia.
    favorinus-aeolid-nudibranch-eating-p...tif
  • Adult female sperm whale (Physeter macrocephalus) at the ocean surface with her mouth open. This whale has just surfaced from foraging in deep water. There is a small piece of squid on the tip of her lower jaw. She has many visible scars left by the suckers of Architeuthis sp. giant squid, which seem to be among the primary prey hunted by sperm whales in the waters of Ogasawara (the Bonin Islands) in Japan. Note the cluster of sucker scars at the base of the whale's lower jaw. Also, it is possible to see inside the roof of the whale's mouth. This angle shows clearly that the whale has no teeth in the upper jaw, only the lower jaw.
    sperm-whale-physeter-macrocephalus-o...tif
  • Measuring part of an Architeuthis giant squid feeding arm that I recovered after seeing a sperm whale (Physeter macrocephalus) breach in the deep waters of the Ogasawara islands in Japan. The squid arm, which was only a portion of the entire feeding tentacle, was 351 centimeters.
    measuring-architeuthis-giant-squid-a...tif
  • This is a 351 centimeter segment of an Architeuthis giant squid feeding arm, laid side-by-side with my friend Shiho Kudo for scale. I recovered this squid arm after seeing a sperm whale (Physeter macrocephalus) breach. Photographed in Ogasawara, Bonin Islands, Japan.
    giant-squid-arm-architeuthis-japan-o...tif
  • This is a 351 centimeter segment of an Architeuthis giant squid tentacular feeding arm left in the water by a sperm whale (Physeter macrocephalus) after it breached. The suction cups on the tentacular clubs are lined with sharp, serrated teeth made of chitin. Photographed in Ogasawara, Bonin Islands, Japan.
    architeuthis-giant-squid-feeding-arm...tif
  • Close-up view of the suckers on the tentacular club of an Architeuthis giant squid. I recovered this squid arm after seeing a sperm whale (Physeter macrocephalus) breach in the waters around Ogasawara, Japan (the Bonin Islands). Note the sharp, serrated teeth that line the edge of the suction cups. These are made of chitin, and help the squid to grasp and secure prey.
    architeuthis-giant-squid-tentacle-su...tif
  • Small octopus peering out of a discarded glass bottle in the muck of Lembeh Strait in North Sulawesi, Indonesia
    octopus-in-a-bottle-lembeh-strait-in...tif
  • A Melibe pilosa nudibranch expanding and extending its semi-transparent oral hood to scoop up rubble and sift through it for food. Lembeh Strait, North Sulawesi, Indonesia.
    Melibe-pilosa-nudibranch-lembeh-stra...tif
  • Top-down view of a mimic octopus (Thaumoctopus mimicus) traveling across the dark sand muck in Lembeh Strait, North Sulawesi, Indonesia
    mimic-octopus-thaumoctopus-mimicus-l...tif
  • Mimic octopus (Thaumoctopus mimicus) traveling across the dark sand muck in Lembeh Strait, North Sulawesi, Indonesia
    mimic-octopus-thaumoctopus-mimicus-l...tif
  • Super macro photograph of a Chromodoris willani nudibranch in the Lembeh Strait, North Sulawesi, Indonesia
    Chromodoris-willani-nudibranch-super...tif
  • Risbecia tryoni nudibranch in Ambon, Indonesia
    Risbecia-tryoni-nudibranch-ambon-ind...tif
  • Cuttlefish (Sepia sp.) eating a small shrimp it just captured
    Sepia-cuttlefish-eating-shrimp-ambon...tif
  • Hypselodoris iacula nudibranch moving along the reef in Ambon, Indonesia
    Hypselodoris-iacula-nudibranch-ambon...tif
  • Ceratosoma sinuatum on the reef in Ambon, Indonesia
    Ceratosoma-sinuatum-nudibranch-ambon...tif
  • Nembrotha lineolata nudibranch foraging on small, green Didemnum molle tunicates. Ambon, Indonesia
    Nembrotha-lineolata-nudibranch-eatin...tif
  • Rear view of a Nembrotha lineolata nudibranch moving along the reef, Ambon, Indonesia
    Nembrotha-lineolata-nudibranch-ambon...tif
  • Mating cream-tinted Hypselodoris bullocki nudibranchs, Ambon, Indonesia
    mating-Hypselodoris-bullocki-nudibra...tif
  • Two beautifully colored Hypselodoris bullocki nudibranchs mating. Lembeh Strait, North Sulawesi, Indonesia.
    colorful-Hypselodoris-bullocki-nudib...tif
  • A small Chiroteuthidae squid dropped by a sperm whale. This family of squid are generally small to medium in size, soft and gelatinous, slow moving. This one looks too small to have been a targeted meal for a sperm whale.
    deepwater-Chiroteuthidae-squid-dropp...tif
  • Wide-angle macro photograph of a large, red Spanish dancer nudibranch scavenging the reef at night in Ambon, Indonesia
    Spanish-dancer-Hexabranchus-sanguine..tiff
  • Glossodoris nudibranch moving along the reef
    Glossodoris_nudibanch-Ambon-201011-3..tiff
  • Dramatic lighting for a nudibranch that is common in the Indo-Pacific region, Chromodoris annae
    Chromodoris-annae_nudibranch-ambon-2..tiff
  • This is a starry night octopus (Callistoctopus luteus) hunting at night. It is searching the folds of Pavona decussata leaf coral for prey.
    callistoctopus-luetus-starry-night-o...tif
  • This is a starry night octopus (Callistoctopus luteus) swimming over a field of Pavona decussata leaf coral at night. The octopus was searching the folds of coral for prey.
    callistoctopus-luteus-starry-night-o...tif
  • This is a head-on, close-up view of a colorful Nembrotha purpureolineata nudibranch
    nembrotha-purpureolineata-nudibranch...tif
  • This is a Cavolinia uncinata, a species of small pelagic mollusk that is found around the world. Tens, perhaps hundreds of thousands of individuals or more appeared for several days in southern Japan, drifting with currents. As pictured here, the snails use nets of mucus to capture food.
    cavolinia-uncinata-sea-butterfly-jap...tif
  • This is a veliger (planktonic larva) of an Oregon hairy triton (Fusitriton oregonensis). It was about 5mm in shell size, suggesting that this animal was nearly mature. Juveniles settle on the ocean floor after metamorphosis. Juveniles have been found at depths exceeding 2000m, while adults are generally found in waters of 800m or shallower. The larval stage of this species is around 4.5 years.
    fusitriton-oregonensis-veliger-orego...tif
  • This is a female Lottia emydia limpet sending a stream of eggs into the water during spawning. These sea snails aggregate in order to spawn en masse. Photographed in Hokkaido, Japan.
    lottia-emydia-limpet-spawning-japan-...tif
  • This is a red-spotted blenny (Blenniella chrysospilos) poking its head out of its home in the coral, with two coral hermit crabs (Paguritta sp.) visible in the background. The blenny's home is the abandoned burrow of a vermetid gastropod, Dendropoma maximum.
    blenniella-chrysospilos-red-spotted-...tif
  • Japanese pygmy squids (Idiosepius paradoxus) possess an attachment organ under the dorsal surface of their mantle, which they use to secure themselves to seaweed such as this eelgrass. This individual is a female, as evidenced by her collection of elongated white spermatophores that have been provided by multiple males.
    idiosepius-paradoxus-female-with-spe...tif
  • This Idiosepius paradoxus Japanese pygmy squid is consuming a crustacean, perhaps an amphipod of sub-order Hyperiidea. The compound eye of the prey is visible. These small squids immobilize prey with venom, then inject digestive enzymes and consume the liquified contents. They discard the empty exoskeletons when finished.
    idiosepius-paradoxus-eating-hyperiid...tif
  • Male Japanese pygmy squids (Idiosepius paradoxus) like the darker squid on the right side of this image often approach females in the process of depositing eggs to pass on spermatophores. Pictured here is the moment that this male has just offered the white strands of sperm. The female has indicated that she will accept. Spermatophores that she has previously received from other males are visible attached to her mantle.
    idiosepius-paradoxus-female-spermato...tif
  • This is a female Japanese pygmy squid (Idiosepius paradoxus) taking a break after depositing an egg on a blade of eelgrass (Zostera marina). Reproductive season takes place twice a year..Adults of this species die after reproduction, which means that there are two generations each year. Size descriptions generate indicate maximum size of up to 18mm. The females in this area were considerably larger, in the range of 30mm. Photographed at two times life-size magnification.
    idiosepius-paradoxus-female-depositi...tif
  • This female Japanese pygmy squid (Idiosepius paradoxus) is depositing eggs on a blade of eelgrass (Zostera marina). The curved white strands are spermatophores attached by multiple males. Photographed at two times life-size magnification.
    idiosepius-paradoxus-female-depositi...tif
  • This rose petal bubble shell (Hydatina physis) is burrowing back into the substrate after having emerged to produce the eggs pictured here. This marine snail gathers and arranges its eggs on its mantle before attaching the completed mass to the sand with a mucous thread.
    hydatina-physis-with-eggs-rose-petal...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 12 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 11 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 8 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 5 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 7 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • Close-up view of strands of multicolored sea hare eggs (Aplysia sp.)
    sea-hare-eggs-high-magnification-jap...tif
  • An adult female sperm whale carrying a large piece of giant squid, which this group of whales had brought up from the deep trench. They were playing with the leftover bits of squid, shredding their meal, perhaps in the process of weaning the juvenile sperm whale pictured swimming alongside the female. I followed this group for several days, and this female was the dominant individual, swimming by and using sonar to check out my boat and people in the water.
    sperm-whales-eating-giant-squid-phys...tif
  • An adult female sperm whale carrying a large piece of giant squid, which this group of whales had brought up from the deep trench. They were playing with the leftover bits of squid, shredding their meal, perhaps in the process of weaning the juvenile sperm whale pictured swimming alongside the female. I followed this group for several days, and this female was the dominant individual, swimming by and using sonar to check out my boat and people in the water.
    sperm-whales-eating-giant-squid-phys...tif
  • This veined octopus (Amphioctopus marginatus) was hiding in a shell, and reached out to grab a small crab when it walked by. The crab struggled in vain for some time, before being devoured by the octopus. Lembeh Strait, Indonesia.
    veined-octopus-Amphioctopus-marginat...tif
  • Tiny swimming mollusk known as a cigar pteropod (Cuvierina columnella). This swimming mollusk is found throughout temperate and tropical waters around the world. Photographed during a blackwater night dive in Palau.
    cigar-pteropod-cuvierina-columnella-...tif
  • Close-up view of the suckers on the tentacular club of an Architeuthis giant squid. I recovered this squid arm after seeing a sperm whale (Physeter macrocephalus) breach in the waters around Ogasawara, Japan (the Bonin Islands). Note the sharp, serrated teeth that line the edge of the suction cups. These are made of chitin, and help the squid to grasp and secure prey.
    architeuthis-giant-squid-suction-cup...tif
  • This is a 351 centimeter segment of an Architeuthis giant squid tentacular arm left in the water by a sperm whale (Physeter macrocephalus) after it breached. The suction cups on the tentacles are lined with sharp, serrated teeth made of chitin. Photographed in Ogasawara, Bonin Islands, Japan.
    architeuthis-giant-squid-tentacular-...tif
  • Small octopus peering out of a discarded glass bottle in the muck of Lembeh Strait in North Sulawesi, Indonesia
    octopus-in-a-bottle-lembeh-strait-in...tif
  • Small octopus foraging at night in the muck of Lembeh Strait in North Sulawesi, Indonesia
    small-octopus-foraging-at-night-lemb...tif
  • Pair of Risbecia tryoni nudibranchs mating. Lembeh Strait, North Sulawesi, Indonesia
    Risbecia-tryoni-nudibranchs-mating-l...tif
  • Small cuttlefish hunting in shallow water, with its feeding tentacles extended. Ambon, Indonesia
    sepia-cuttlefish-hunting-ambon-indon...tif
  • Beautiful orange, yellow and purple Ceratosoma tenue nudibranch crawling along the muck bottom of Lembeh Strait, North Sulawesi, Indonesia
    Ceratosoma-tenue-nudibranch-lembeh-s...tif
  • Octopus peeking out from a discarded bottle like a cephalopod cyclops, photographed in the Lembeh Strait, North Sulawesi, Indonesia
    octopus-in-bottle-in-the-muck-lembeh...tif
  • Aegires gardineri nudibranch photographed at Sawa Sawa Sawaga in Milne Bay, Papua New Guinea
    Aegires-gardineri-nudibranch-milne-b...tif
  • Jorunna funebris nudibranch with a somewhat unusual abundance of dark splotches. Photographed at Sawa Sawa Sawaga in Milne Bay, Papua New Guinea
    unusual-Jorunna-funebris-nudibranch-...tif
  • An extreme close-up, shot at 5x life-size magnification, of the feather-like gills of a Chromodoris coi nudibranch
    chromodoris-coi-nudibranch-milne-bay...tif
  • Cute orange and white Thecacera picta nudibranch curled up around a bryozoan growing on an orange sponge
    thecacera-picta-nudibranch-ambon-200...tif
  • A cute baby Jorunna rubescens nudibranch
    Jorunna-rubescens-nudibranch-juvenil..tiff
  • This is a male broadclub cuttlefish (Sepia latimanus) engaging in courtship. He is stroking the female with his tentacles. If she accepts, they will mate and she will deposit eggs while the male maintains vigil to warn off other males.
    sepia-latimanus-broadclub-cuttlefish...tif
  • This is a Cavolinia uncinata, a species of small pelagic mollusk that is found around the world. Tens, perhaps hundreds of thousands of individuals or more appeared for several days in southern Japan, drifting with currents. As pictured here, the snails use nets of mucus to forage for food.
    cavolinia-uncinata-sea-butterfly-jap...tif
  • This is a veliger (planktonic larva) of an Oregon hairy triton (Fusitriton oregonensis). It was about 5mm in shell size, suggesting that this animal was nearly mature. Juveniles settle on the ocean floor after metamorphosis. Juveniles have been found at depths exceeding 2000m, while adults are generally found in waters of 800m or shallower. The larval stage of this species is around 4.5 years.
    fusitriton-oregonensis-veliger-orego...tif
  • Pictured here are two male broadclub cuttlefish (Sepia latimanus) engaged in a conflict. The bold striped pattern signals aggression. The males were fighting to establish dominance in the area around this large Acropora coral colony, where multiple females had gathered for spawning.
    sepia-latimanus-cuttlefish-males-fig...tif
  • This is a pair of broadclub cuttlefish (Sepia latimanus) mating. Having succeeded in gaining the female's acceptance, the male on the right has wrapped his arms around the female's head. He is in the process of deliverying a package of sperm with his hectocotylus (modified left tentacle). The male typically stays with the female while she deposits fertilized eggs, to guard against copulation by other males.
    sepia-latimanus-cuttlefish-mating-ja...tif
  • This is a broadclub cuttlefish (Sepia latimanus) that was hunting small crustaceans.
    sepia-latimanus-broadclub-cuttlefish...tif
  • After depositing an egg and prior to cleaning the eelgrass again, female Japanese pygmy squids (Idiosepius paradoxus) lift away from the grass in this manner. This is part of the process of preparing the next egg that will be deposited. Photographed at a magnification of two time life-size.
    idiosepius-paradoxus-female-depositi...tif
  • This female Japanese pygmy squid (Idiosepius paradoxus) is cleaning the surface of eelgrass (Zostera marina) prior to depositing an egg. The curved white strands are spermatophores attached by multiple males. Photographed at two times life-size magnification.
    idiosepius-paradoxus-female-depositi...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 13 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This sequence depicts a veined octopus (Amphioctopus marginatus) using a broken bottle as a portable shelter. The octopus was carrying a small crab that it had caught for a meal. Image 1 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • This is a blue ocean slug (Glaucus atlanticus) approaching the venom-filled tentacles of a blue bottle (Physalia utriculus). Both were washed ashore as part of a mass, multi-day stranding of thousands of blue bottles, which are colonial siphonophores that are also called Portuguese man-of-wars. The nudibranchs are part of the rarely seen blue community of the open ocean. They prey on other animals in that community, such as Physalia utriculus, by-the-wind-sailors (Velella velella), blue buttons (Porpita porpita), and violet snails (Janthina janthina). Glaucus nudibranchs are immune to the venom of the blue bottles that they consume. They store their prey’s nematocysts and deploy them in specialized cnidosacs at the tips of their ornate cerata. Because these nudibranchs concentrate the venom of their prey, they can produce a more powerful sting than Physalia.
    glaucus-atlanticus-nudibranch-with-p...tif
  • Hermaphroditic sea hares (Aplysia sp.) engaging in copulation and egg-laying in shallow water, at a depth of about five meters
    sea-hares-laying-eggs-aplysia-japan-...tif
  • An adult female sperm whale carrying a large piece of giant squid, which this group of whales had brought up from the deep trench. They were playing with the leftover bits of squid, shredding their meal, perhaps in the process of weaning the juvenile sperm whale pictured swimming alongside the female. I followed this group for several days, and this female was the dominant individual, swimming by and using sonar to check out my boat and people in the water.
    sperm-whales-eating-giant-squid-phys...tif
  • A well-camouflaged flamboyant cuttlefish (Metasepia pfefferi) eating a sandperch (Parapercis sp.). Photographed in Lembeh Strait, Indonesia.
    flamboyant-cuttlefish-eating-sandper...tif
  • This is a colorful pygmy squid (Idiosepius sp.), less than 1cm in length, hunting for food in relatively shallow water at night. Photographed during a blackwater dive in Palau.
    pygmy-squid-idiosepius-sp-palau-blac...tif
  • This piece of an Architeuthis giant squid arm was dropped by an adult female sperm whale (Physeter macrocephalus) shortly after it came up from a deep dive to forage for food. When I retrieved this squid segment, it was as cold as ice. Photographed in Ogasawara, Japan.
    architeuthis-giant-squid-arm-dropped...tif
  • I watched this adult female sperm whale (Physeter macrocephalus) come up from deep water in the Ogasawara islands of Japan, carrying several fragments of Architeuthis giant squid in her mouth. A juvenile sperm whale that was part of her family group joined the adult as she surfaced, and the two swam together. The adult spit out or dropped one piece of giant squid, as shown in this photograph. When I retrieved the giant squid fragment, it was ice cold.
    sperm-whale-with-architeuthis-giant-...tif
  • Photographer Douglas Seifert holding a 351-centimeter segment of a Architeuthis giant squid feeding arm, displaying the suction cups lining the tentacular club. The suction cups have sharp, serrated teeth that help the giant cephalopod hold on to its prey. I recovered this giant squid arm segment after seeing a sperm whale (Physeter macrocephalus) breach. Photographed in Ogasawara, Japan.
    architeuthis-giant-squid-japan-ogasw...tif
  • Segment of an Architeuthis giant squid feeding tentacle (tentacular arm) that was left in the water by a sperm whale (Physeter macrocephalus) after it breached. This squid arm fragment measured 351 centimeters. Note the suction cups, which are lined with finely serrated teeth made of chitin, which help the squid grab and hold prey.
    architeuthis-giant-squid-feeding-ten...tif
  • Small octopus at night in Lembeh Strait, with its siphon clearly visible. When an octopus wants to move rapidly, it can take water in through its mantle and then close it off to seal in the water. The octopus can then expel the trapped water through its siphon to propel itself at high speed.
    small-octopus-at-night-lembeh-strait...tif
  • Thecacera picta nudibranch feeding on bryozoans. Ambon, Indonesia
    Thecacera-picta-nudibranch-feeding-b...tif
  • Nembrotha cristata nudibranch foraging on the reef in Ambon, Indonesia
    Nembrotha-cristata-nudibranch-ambon-...tif
  • Flabellina bilas nudibranch in Ambon, Indonesia
    Flabellina-bilas-nudibranch-ambon-in...tif
  • Black and white Thecacera nudibranch with orange-tipped rhinophores. Ambon, Indonesia
    Thecacera-nudibranch-ambon-indonesia...tif
  • Nudibranch (Nembrotha cristata) eating a tunicate (Sigillina signifera). Ambon, Indonesia
    nudibranch-Nembrotha-cristata-eating...tif
  • Thecacera sp. nudibranch trying to make headway against the current in Lembeh Strait, North Sulawesi, Indonesia
    yellow-black-Thecacera-nudibranch-st...tif
  • Phyllodesmium jakobsenae nudibranch feeding on Xenia soft coral in Lembeh Strait, North Sulawesi, Indonesia
    Phyllodesmium-jakobsenae-nudibranch-...tif
  • Front-on view of Ceratosoma tenue nudibranch. Super macro photograph taken at 4x life-size magnification. Lembeh Strait, North Sulawesi, Indonesia.
    front-view-Ceratosoma-tenue-nudibran...tif
  • Close-up of a flamboyant cuttlefish egg (Metasepia pfefferi), with the developing juvenile attached to its yolk sac and visible inside the egg. Super macro photograph shot at 5x life-size.
    flamboyant-cuttlefish-egg-with-juven...tif
  • Aegires minor nudibranch in Bulolo Passage, located in the Barrier Reef of Papua New Guinea
    Aegires-minor-nudibranch-Papua-New-G...tif
  • Leftover piece of a deep-water seven-arm octopus floating at the ocean surface in Ogasawara, perhaps remnants of predation by sperm whales or other toothed cetaceans. The octopus has eight arms, but the hectocotylus (a specially modified arm used in egg fertilization) is coiled in a sac beneath the right eye. Due to this species' thick gelatinous tissue, the arm is easily overlooked, giving the appearance of having only seven arms.
    seven-arm-octopus-haliphron-atlantic...tif
  • This sperm whale has just come up to breathe, after foraging for prey in deep water. There is a small piece of squid visible, attached to the whale's top left jaw. It is very likely a piece of Architeuthis giant squid, which seem to be relatively common in the deep waters adjacent to the Ogasawara island chain of Japan. There are also scars made by suction cups of squid feeding tentacles visible on the forehead of the whale. Those suction cups are lined with finely serrated rings of teeth made of chitin.
    sperm-whale-physeter-macrocephalus-a...tif
  • A Melibe pilosa nudibranch expanding and extending its semi-transparent oral hood to scoop up rubble and sift through it for food. Lembeh Strait, North Sulawesi, Indonesia.
    Melibe-pilosa-nudibranch-lembeh-stra...tif
  • Ceratosoma sinuatum nudibranch with one rhinophore flopped over. Ambon, Indonesia
    Ceratosoma-sinuatum-nudibranch-ambon...tif
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Tony Wu Underwater Photography

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