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Common octopus (Octopus vulgaris). Wildlife animal.

Sea life. Octopus, Cephalopod on Sandy bottom. Underwater abstract. Close-up

Frame is filled with a large red pacific octopus under water with its under side visible through the glass of the aquarium. Its legs at different angles showing the many different size tentacles suckers, in varied levels of focus and sharpness. One of its eyes are visible. There are rocks, anemones and seaweed behind the octopus.

The Common (European) Cuttlefish (Sepia officinalis) underwater in sea - cephalopod, related to squid and octopus

A common octopus (Octopus vulgaris) in La Ciotat in the Calanque National Park in the South of France.

the Octopus underwater in aquarium, close up portrait detail

Marine wildlife, animal kingdom, close up of tropical rare animals in the water, earth preservation, life in watertank, aquarium

A Wonderpus Larvae octopus swimming in the tranquil ocean.

Close frame of an amazing Giant Pacific Octopus in an aquarium, facing forward with several tentacle arms showing the suckers with the head and eyes visible behind

$Bigfin Reef Squids are easy to distinguish from other squids in that they possess thick and muscular oval fins that extend around almost the entire mantle. Because of these fins, bigfin reef squids are sometimes mistaken for cuttlefish. The bigfin reef squid is the most widespread species in the genus Sepioteuthis. It is found in temperate and tropical regions of the Indian Ocean and the Western Pacific Ocean.\nAt night, when the Bigfin Reef Squids are most active, they are commonly found in shallow areas from 0-100m around reefs, sea grass beds, sandy bottoms, or rocky shorelines. They surface at night, as it is less likely to be detected by predators. During the day, they generally move to deeper waters or near any form of cover, such as floating driftwood, reefs, rocks, or grasses.\nSquids have speedy colour-changing abilities as their pigment cells, the chromatophores, rapidly change size and colour and the visual effect is enhanced by light reflecting cells, the iridocytes. They can shoot ink (dark melanin pigment) to confuse predators and aide in escapes. \nTriton Bay, West Papua Province, Indonesia, 3°56'17.7941 S 134°7'10.2802 E at 1m depth$

digital render of an octopus isolated on white

Close frame of an amazing Giant Pacific Octopus in an aquarium.

Closeup of a Pelagia noctiluca in the waters of Sicily

Coconut Octopus (Amphioctopus marginatus) is a species of benthic cephalopod that belongs to the family Octopodidae. They are known for their high level of intelligence and ability to use tools, such as coconut shells, as shelter. They are native to tropical marine environments, particularly coral reefs, and are well-known for their excellent camouflage abilities, including color-changing and mimicry. They have eight arms, each lined with two rows of suction cups, and are able to communicate with other octopuses through color changes and body language. They use jet propulsion to move through the water and can also expel ink as a defense mechanism. Overall, Coconut Octopuses are fascinating invertebrates with complex behavior and unique adaptations.

Two-spot octopus, Octopus bimaculoides showing one of the blue false eye spots.

Small sharpear enope squid in a symmetrical pose. Photographed at night during a blackwater drift dive out in the open ocean off Palm Beach, Florida

Cuttlefish or cuttles are marine molluscs of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses. Cuttlefish have a unique internal shell, the cuttlebone.

Common cuttlefish - Sepia officinalis,close up

A beautiful cuttlefish (sepiida) at Ripley's Aquarium in Toronto, Canada

$The Pharaoh Cuttlefish Sepia pharaonis lives in warm water (30°C) and is fast growing. They mate and spawn at 110 days and their life span is 240 days. They lay about 1500 eggs which take 14 days to develop at 28°C. Males are larger than females and most are larger than 1 kg. \n\nIn contrary to a squid's tail fins, cuttlefish have got a fin fringe running around all of the body side. A cuttlefish moves by undulating that fringe. Additionally, the cuttlefish can use the rocket propulsion typical of all cephalopods: Water is pressed from the pallial (mantle) cavity through the hyponome or siphon (a muscular tube), which is also used to direct the propulsion. So the cuttlefish is driven backward, which it uses mainly to evade an enemy, especially on short distances. \n\nThis specimen is howering near the Lava Flow of Neira Island, Banda Sea, Indonesia \n4°30'20.418 S 129°52'57.456 E at 8m depth$

3D rendering of an octopus isolated on white background

Extreme close up of Octopus eye and skin texture, macro underwater photography. Australia.

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