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  • 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
  • Flamboyant cuttlefish (Metasepia pfefferi) in Ambon, Indonesia
    Metasepia-pfefferi-flamboyant-cuttle...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 pair of pharoah cuttlefish (Acanthosepion 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.
    acanthosepion-pharaonis-cuttlefish-r...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
  • 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
  • Shown here is a cluster of Pharoah cuttlefish (Acanthosepion pharaonis) eggs that were deposited five days prior to this photograph being taken, far back in a narrow crevice among rocks. Despite the concealed location, many of the eggs had been already consumed by predators. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-e...tif
  • Shown here is a female Pharoah cuttlefish (Acanthosepion pharaonis) in the foreground preparing an egg for fertilization, using the spermatophores passed to her by the attending male. The female's scrunched-up face is characteristic of this point in the reproductive process. Shortly after this photo was taken, the female deposited a single egg in a crevice among the rocks. This pair was at 25m depth. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...tif
  • Acanthosepion pharaonis cuttlefish males compete for females during the reproductive season. Pictured here is a male warding off two challengers in the background. The bright, gaudy patterns and colors are characteristic of this situation. This male later mated with the female. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...tif
  • Acanthosepion pharaonis cuttlefish males compete for females during the reproductive season. Pictured here is a male warding off two challengers in the background. The bright, gaudy patterns and colors are characteristic of this situation. This male later mated with the female. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...tif
  • Shown here is a male Pharoah cuttlefish (Acanthosepion pharaonis) guarding a female depositing eggs after mating. Rival males were present in the area, hence the behavior of the male. Females deposit one egg at a time, backing up from the nest area to prepare each egg. This takes time. The male stays with her to keep other males away. The white string-like things on the ground comprise the gelatinous substance produced in the female's nidamental gland to envelope the eggs. Females sometimes eject this material while preparing eggs. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...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
  • 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
  • Pictured here is an Acanthosepion pharaonis cuttlefish male attempting to  mate with a female. There is another male in the background that made numerous but unsuccessful attempts to challenge and dislodge the primary male. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...tif
  • This is a pair of Pharoah cuttlefish (Acanthosepion pharaonis) mating. The cephalopods lock arms, and the male passes spermatophores to the female by means of a specialized arm (hectocotylus). The male stays with the female while she deposits eggs, to prevent access by rivals. Visible on the ground at the left side of the photo are strands of a stringy substance emitted by the female via her siphon each time before she deposits an egg. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...tif
  • Small cuttlefish hunting in shallow water, with its feeding tentacles extended. Ambon, Indonesia
    sepia-cuttlefish-hunting-ambon-indon...tif
  • Shown here is a female Pharoah cuttlefish (Acanthosepion pharaonis) ejecting white strands from her siphon just prior to depositing an egg. Previous strands of this material are visible on the substrate. This white substance is the gelatinous material this female produces in her nidamental gland to envelope eggs. Females sometimes eject this material while preparing eggs. The male is watching over her to ensure rival males do not approach. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-m...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
  • 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
  • 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
  • Broadclub cuttlefish (Sepia latimanus) resting on the dark sand bottom of the Lembeh Strait in North Sulawesi, Indonesia
    broadclub-cuttlefish-Sepia-latimanus...tif
  • Two centimeter juvenile flamboyant cuttlefish (Metasepia pfefferi) in Lembeh Strait, Indonesia
    flamboyant-cuttlefish-juvenile-metas...tif
  • Cuttlefish (Sepia sp.) eating a small shrimp it just captured
    Sepia-cuttlefish-eating-shrimp-ambon...tif
  • This is a flamboyant cuttlefish (Metasepia pfefferi) consuming a sandperch (Parapercis sp.) that it had just grabbed.
    metasepia-pfefferi-flamboyant-cuttle...tif
  • Shown here is a cluster of freshly deposited eggs of Pharoah cuttlefish (Acanthosepion pharaonis), located far back in a narrow crevice among rocks. Photographed in Kagoshima Prefecture, Japan.
    acanthosepion-pharaonis-cuttlefish-e...tif
  • This is a bobtail squid (Euprymna morsei), known as mimi-ika in Japanese.
    euprymna-morsei-mimika-bobtail-squid...tif
  • Mimika bobtail squid (Euprymna morsei)
    mimika-bobtail-squid-euprymna-morsei...tif
  • This is a stubby squid (Rossia pacifica), a relative of bobtail squids. This species is native to the North Pacific, found in a wide range of depths, from 20m to 1300m. This individual was between 10cm and 12cm in total length.
    rossia-pacific-stubby-squid-japan-20...tif
  • This is a bobtail squid (Euprymna morsei), known as mimi-ika in Japanese.
    euprymna-morsei-mimika-bobtail-squid...tif
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Tony Wu Underwater Photography

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