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  • 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
  • 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 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 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 is an East Asian common octopus (Octopus sinensis) holding a bivalve with a firm grip. The octopus did not want to share its upcoming meal. It walked away holding the shell like this in order to find a place to eat in private. Photographed in Kagoshima Prefecture, Japan.
    octopus-sinensis-bivalve-meal-japan-...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
  • Veined octopus (Amphioctopus marginatus) looking for food at night in the Lembeh Strait, North Sulawesi, Indonesia.
    coconut-octopus-amphioctopus-margina...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
  • 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
  • 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 veined octopus (Amphioctopus marginatus) resting comfortably inside a bivalve shell. It was early in the morning, after the octopus's prime hours of nocturnal activity. Photographed in Kagoshima Prefecture, Japan.
    amphioctopus-marginatus-octopus-in-s...tif
  • This is a giant Pacific octopus (Enteroctopus dofleini) sitting on a sandy bottom in front of an encrusted metal bar. The octopus had earlier made contact, investigating my camera and me. Once satisfied, the animal sat almost completly still, but for the opening and closing of its siphon. Photographed in Hokkaido, Japan.
    enteroctopus-dofleini-giant-pacific-...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
  • 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
  • Shown here is what remains of a seven-arm octopus (Haliphron atlanticus), floating at the surface in the open ocean above the Ogasawara trench in the Pacific Ocean. Sperm whales (Physeter macrocephalus) were foraging in the area. It is possible that one of the whales preyed upon this cephalopod. This species 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. Photographed in the Bonin Islands, Japan.
    haliphron-atlanticus-seven-arm-octop...tif
  • Mimic octopus (Thaumoctopus mimicus) sitting on dark sand muck in Lembeh Strait, North Sulawesi, Indonesia
    mimic-octopus-thaumoctopus-mimicus-l...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
  • 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
  • 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
  • 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
  • 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
  • This is a male of an as-yet un-named octopus species extending his hectocotylus arm to mate with a female in the background. These octopuses excel in mimicry of staghorn coral rubble. Pictured here, the female at the end of the male's arm looks remarkably like a piece of dead, broken coral. The two were approximately 70cm apart. Photographed in Kagoshima Prefecture, Japan.
    octopus-mating-unnamed-species-japan...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
  • 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 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 is a giant pacific octopus (Enteroctopus dofleini) gliding across the ocean bottom in the northern waters of Japan.
    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 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 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 3 in a series of 15.<br />
.
    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 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 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 9 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 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 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 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 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
  • 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
  • Liparis tanakae snailfishes have a lifespan of one year. Their final task is move to shallow water from their normal depths of 50m to 120m in order to spawn with as many females as possible. Males establish spawning terrority and protect eggs from predators. Their strength drains over time. Other males challenge them for coveted breeding sites. Eventually the males die, ceding spawning sites to the next male in turn. This male was still alive at the time of this photo and able to swim when needed to protect his territory. He died three days later. The fish's adhesive disk, formed from modified pectoral fins, is visible. There is a white circular scar visible on the fish's left, just above the adhesive disk. This might be the result of an encounter with an octopus. Photographed in Yamaguchi Prefecture, Japan.
    liparis-tanakae-snailfish-male-dying...tif
  • This is a mature Liparis tanakae Snailfish male. This individual was distinguished by two circular scars on his right pectoral fin, visible in this image. The scars may have resulted with an encounter with an octopus. This species is normally found in depths of 50m to 120m. These fish come up to shallower water for reproduction. Photographed in Yamaguchi Prefecture, Japan.
    liparis-tanakae-snailfish-male-20240...tif
  • This is a mature Liparis tanakae snailfish male. This individual was distinguished by two circular scars on his right pectoral fin, visible in this image. The scars may have resulted from an encounter with an octopus. Photographed in Yamaguchi Prefecture, Japan.
    liparis-tanakae-snailfish-male-20240...tif
  • This is a mature Liparis tanakae snailfish male. This individual was distinguished by two circular scars on his right pectoral fin, visible in this image. The scars may have resulted from an encounter with an octopus. This species is normally found in depths of 50m to 120m. These fish come up to shallower water for reproduction. Photographed in Yamaguchi Prefecture, Japan.
    liparis-tanakae-snailfish-male-20240...tif
  • Anemone hermit crab (Dardanus pedunculatus) capturing and eating a mollusk. This hermit crab has a symbiotic relationship with anemones. The crab attaches anemones to the shell it lives in and transfers the anemones when it grows larger and changes shells. The anemones provide defence against predators like octopuses. It is possible that transfer of shells took place after this photograph was taken.
    anemone-hermit-crab-dardanus-peduncu...tif
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