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  • Veined octopus in front of a glass bottle, which it was using as a makeshift home
    Veined-octopus-Amphioctopus-marginat..tiff
  • Small veined octopus (Amphioctopus marginatus) making itself round, perhaps in an attempt to look as big as possible to discourage close approach
    Ambon-Amphioctopus-marginatus-Veined..tiff
  • This is the internal shell of a deep-water cephalopod called a Ram’s horn squid, also known as a little post horn squid (Spirula spirula). This cephalopod is the only known member of its genus. The internal shell is both robust and buoyant, so often found on beaches. This one washed up during a mass stranding of thousands of Physalia utriculus amd other animals of the open-ocean, pelagic community. Attached to the shell were pelagic goose barnacles (Lepas sp.).
    rams-horn-shell-spirula-goose-barnac...tif
  • This is a giant pacific octopus (Enteroctopus dofleini) investigating a pile of northern Pacific seastars (Asterias amurensis) and blue bat seastars (Patiria pectinifera) that are scavenging a dead giant pacific octopus. One arm of the dead octopus is visible. Most of the dead cephalopod had already been consumed. This octopus touched and caressed the remains of the dead octopus for a few minutes, then departed.
    enteroctopus-dofleini-giant-pacific-...tif
  • This is a dead mature female Ancistrocheirus lesueuri squid, which is a mesopelagic cephalopod living in the range of 200 to 1000 meters depth. This specimen was found at the surface, floating upside down as pictured here. There are photophores visible on the ventral surface (facing up) and hooks on both clubs of the feeding tentacles. This squid is an important part of the diet of sperm whales in the southern hemisphere. There were many sperm whales in the area when this was photographed. This species is ammoniacal, meaning it stores ammonia ions in the arms, head and mantle tissue for buoyancy. Why this specimen would only float upside-down is unclear. Perhaps the ammonia (which is lighter than sea water) was the cause. This specimen was 40cm to 45cm.
    ancistrocheirus-lesueuri-sharpear-en...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
  • 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
  • This is a pile of northern Pacific seastars (Asterias amurensis) and blue bat seastars (Patiria pectinifera) that are scavenging a dead giant pacific octopus (Enteroctopus dofleini). It took several days for the entire octopus to be consumed.
    enteroctopus-dofleini-giant-pacific-...tif
  • Flamboyant cuttlefish (Metasepia pfefferi) in Ambon, Indonesia
    Metasepia-pfefferi-flamboyant-cuttle...tif
  • This is a large male broadclub cuttlefish hovering above a coral reef during the reproductive season. Multiple males like this were engaged in competition for females that were ready to mate and deposit eggs.
    sepia-latimanus-broadclub-cuttlefish...tif
  • This is a pair of pharoah cuttlefish (Sepia pharaonis), female in the foreground. Having copulated with the male, the female is preparing an egg via internal fertilization, which she will then deposit under a nearby rock. The male in the background stands guard to ward off other males that might approach.
    sepia-pharaonis-cuttlefish-reproduct...tif
  • This is a giant pacific octopus (Enteroctopus dofleini) gliding across the ocean bottom in the northern waters of Japan.
    enteroctopus-dofleini-pacific-giant-...tif
  • Octopuses are renowned for their intelligence and curiosity, This East Asian common octopus (Octopus sinensis) snuck up at night to take my dive light. The light was attached to my wrist via a lanyard, so try as it might, the octopus was unable to claim its prize. We engaged in a game of tug-of-war for a few minutes, during which I laughed so hard that I must have wasted a considerable amount of air. The octopus eventually relented, blending in with the substrate and sulking.
    octopus-sinensis-east-asian-common-o...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 9 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • Small, inquisitive broadclub cuttlefish (Sepia latimanus) that accompanied for much of a dive, hovering nearby and even approaching to inspect one of my camera rigs. The cuttlefish adjusted its coloration to match the background, but turned yellow briefly when it swam up above the substrate. Lembeh Strait, North Sulawesi, Indonesia
    cute-yellow-broadclub-cuttlefish-sep...tif
  • Starry night octopus (Callistoctopus luteus | Octopus luteus) foraging for food in Lembeh Strait, Indonesia. These bright-red octopuses are relatively common at night in this area.
    starry-night-octopus-Callistoctopus-...tif
  • This is a female broadclub cuttlefish (Sepia latimanus) depositing eggs among branches of table coral (Acropora sp.) shortly after mating.
    sepia-latimanus-cuttlefish-depositin...tif
  • This is a bobtail squid (Euprymna morsei), known as mimi-ika in Japanese.
    euprymna-morsei-mimika-bobtail-squid...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 15 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 3 in a series of 15.<br />
.
    amphioctopus-marginatus-bottle-indon...tif
  • Two centimeter juvenile flamboyant cuttlefish (Metasepia pfefferi) in Lembeh Strait, Indonesia
    flamboyant-cuttlefish-juvenile-metas...tif
  • Broadclub cuttlefish (Sepia latimanus) resting on the dark sand bottom of the Lembeh Strait in North Sulawesi, Indonesia
    broadclub-cuttlefish-Sepia-latimanus...tif
  • Cuttlefish (Sepia sp.) eating a small shrimp it just captured
    Sepia-cuttlefish-eating-shrimp-ambon...tif
  • Small octopus sitting on orange sponge, demonstrating its ability to create hair-like projections with its skin. Ambon, Indonesia.
    Octopus-on-orange-sponge-ambon-indon...tif
  • 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 female Sepia latimanus broadclub cuttlefish preparing to deposit eggs into the Acropora coral. Females adopt this characteristic scrunched up face prior to depositing eggs. The male that has just mated with her is standing guard in the background to keep other males away.
    sepia-latimanus-cuttlefish-courtship...tif
  • This is a flamboyant cuttlefish (Metasepia pfefferi) extending its feeding tentacles to grab a sandperch (Parapercis sp.). The cuttlefish's tentacular clubs are milliseconds from latching on to the fish.
    metasepia-pfefferi-flamboyant-cuttle...tif
  • This is a female East Asian common octopus (Octopus sinensis) protecting a clutch of eggs during the winter, which is not the usual time of year for this species to brood eggs. Reproductive activity is most common during the summer months. This female was eventually successful. Some eggs started to hatch after 62 days, running until 76 days. Hatching during the normal season requires only a few days.
    octopus-sinensis-east-asian-common-o...tif
  • This is an East Asian common octopus (Octopus sinensis), known as madako in Japanese. This one was positioned confidently at the entrance to a hole in the reef.
    octopus-sinensis-east-asian-common-o...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 10 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 5 in a series of 15.
    amphioctopus-marginatus-bottle-indon...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
  • 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
  • Small cuttlefish hunting in shallow water, with its feeding tentacles extended. Ambon, Indonesia
    sepia-cuttlefish-hunting-ambon-indon...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.
    whiplash-squid-dropped-by-sperm-whal...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
  • Shown here is a male Sepia latimanus cuttlefish (right) approaching a female (left) in order to attempt to mate. The male has split his body pattern and coloration into two distinct halves for courtship. The half facing the female is a subdued whitish tone, which presumably communicates calm, soothing intent. The other half is normal pattern, possibly to ward off other males.
    sepia-latimanus-cuttlefish-courtship...tif
  • This is a giant pacific octopus (Enteroctopus dofleini) foraging for food. The animal has enveloped rocks in order to search holes and crevices for prey.
    enteroctopus-dofleini-pacific-giant-...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 14 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 6 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
  • 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
  • Mimika bobtail squid (Euprymna morsei)
    mimika-bobtail-squid-euprymna-morsei...tif
  • This is a firefly squid (Watasenia scintillans). This deepwater species ascends to relatively shallow water for reproduction purposes. Sometimes, as is pictured here, individuals appear to become disoriented, repeatedly hitting the substrate for no apparent reason. This species is known for its bioluminescence.
    firefly-squid-watasenia-scintillans-...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
  • Veined octopus (Amphioctopus marginatus) looking for food at night in the Lembeh Strait, North Sulawesi, Indonesia.
    coconut-octopus-amphioctopus-margina...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 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
  • 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 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
  • 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
  • This is a flamboyant cuttlefish (Metasepia pfefferi) consuming a sandperch (Parapercis sp.) that it had just grabbed.
    metasepia-pfefferi-flamboyant-cuttle...tif
  • This is a bobtail squid (Euprymna morsei), known as mimi-ika in Japanese.
    euprymna-morsei-mimika-bobtail-squid...tif
  • This is a juvenile giant Pacific octopus (Enteroctopus dofleini), about 7cm to 8cm in diameter when the octopus was in this position.
    enteroctopus-dofleini-juvenile-giant...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 4 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 2 in a series of 15.
    amphioctopus-marginatus-bottle-indon...tif
  • Part of a squid dropped by a sperm whale. From the size, shape and shape of the clubs on the feeding tentacles, my guess is that this is the remnants  of a sharpear enope squid (Ancistrocheirus lesueuri), a mesopelagic squid that sperm whales feed upon in the southern hemisphere.
    ancistrocheirus-lesueuri-sharpear-en...tif
  • A well-camouflaged flamboyant cuttlefish (Metasepia pfefferi) eating a sandperch (Parapercis sp.). Photographed in Lembeh Strait, Indonesia.
    flamboyant-cuttlefish-eating-sandper...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
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Tony Wu Underwater Photography

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