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Lesser bobtail squid underwater in the Saguenay Fjord in Canada

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

Behold the mysterious elegance of an octopus as it gracefully navigates the ocean depths, its tentacles dancing in the currents, a symbol of intelligence and adaptability.

$Mollusks, type Mollusca. Cephalopods. Order Squid - Cuttlefish squid.\nSquids (lat. Teuthida) are a detachment of decapod cephalopods. Usually they have dimensions of 0.25-0.5 m.$

Extreme close-up of an octopus sleeping with closed eyes. Blurred tentacles in the foreground.

$The Pharaoh Cuttlefish Sepia pharaonis lives in warm water (30°C) and is fast growing. They mate and spawn at 110 days and their life span is 240 days. They lay about 1500 eggs which take 14 days to develop at 28°C. Males are larger than females and most are larger than 1 kg. In contrary to a squid's tail fins, cuttlefish have got a fin fringe running around all of the body side. A cuttlefish moves by undulating that fringe. Additionally, the cuttlefish can use the rocket propulsion typical of all cephalopods: Water is pressed from the pallial (mantle) cavity through the hyponome or siphon (a muscular tube), which is also used to direct the propulsion. So the cuttlefish is driven backward, which it uses mainly to evade an enemy, especially on short distances. This specimen is over a sponge in the Triton Bay, Indonesia, \n43°54'41.052 S 134°7'18.204 E at 15m depth$

Octopus is resting on the sand and is camouflaged to blend in with the coral. The background consists of coral and rocks.

Big Blue Octopus - Octopus cyanea swims in the open sea. Underwater world of Bali.

Sea life. Octopus eye- Cephalopod. Underwater abstract. Close-up

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

Pharaoh Cuttlefish (Sepia pharaonis) expands and contracts muscle rings around sac colors in order to show different colors. It is typically consumed as dried, shredded cuttlefish, popular snack food

$Long Arm Octopus Macrotritopus sp. is pelagic in the larval phase. As adult he lives on sandy or muddy surfaces. \n\nWhen you think of a long-armed octopus, you think of a meter-long animal. It is the proportions, the small head (6cm) compared to the arms (15cm), that make this animal appear so long-armed. \nThe Long Arm Octopus found in the Indo-Pacific region, including the Lembeh Strait, may represent an undescribed species within this genus. \nUnlike some of more robust cephalopods, the Long Arm Octopus are normally quite shy. They are often found resting inside a small hole in the sand with only their head sticking out.\nThis specimen was encountered in the Lembeh Strait, Indonesia \n1°28'56.394 N 125°15'15.588 E at 9m depth$

$The Indo-Pacific reef squid, also known by its scientific name Sepioteuthis lessoniana, is a species of cephalopod mollusk belonging to the family Loliginidae. It is commonly found in the tropical and subtropical waters of the Indo-Pacific region, including the Indian Ocean, the Red Sea, and the western Pacific Ocean.\n\nThese squids have a unique and fascinating appearance. They have a torpedo-shaped body with a mantle that can reach lengths of up to 30 centimeters (12 inches) in adulthood. The mantle is soft and muscular, allowing the squid to propel itself through the water with remarkable speed and agility.\n\nThe coloration of the Indo-Pacific reef squid is highly variable and can change rapidly to match its surroundings, making it an expert in camouflage. The body typically features a combination of white, brown, red, or purple hues, which can be adjusted to blend in with coral reefs, sandy bottoms, or open water.\n\nOne of the distinguishing features of these squids is their large, expressive eyes. They have well-developed vision, enabling them to spot prey and predators in their environment. They also possess eight arms and two long tentacles equipped with suckers, which they use to capture and manipulate their prey.\n\nIndo-Pacific reef squids are carnivorous and primarily feed on small fish, crustaceans, and other small invertebrates. They are active hunters and use their agile swimming and quick movements to capture their prey. They have a beak-like mouth that they use to tear apart their food before ingesting it.$

A common cuttlefish (Sepia officinalis) in the Calanques National Park in the South of France.

emperor angelfish, Mutton snapper,French angelfish, sea horse, Cuttlefish , stone fish

Eye level with a Dwarf (pygmy) Cuttlefish (Sepia bandensis) against a dark background. Photographed in Lembeh Strait, Indonesia.

Squid in the Red Sea on the coast of Egypt

$The Pharaoh Cuttlefish Sepia pharaonis lives in warm water (30°C) and is fast growing. They mate and spawn at 110 days and their life span is 240 days. They lay about 1500 eggs which take 14 days to develop at 28°C. Males are larger than females and most are larger than 1 kg. \n\nIn contrary to a squid's tail fins, cuttlefish have got a fin fringe running around all of the body side. A cuttlefish moves by undulating that fringe. Additionally, the cuttlefish can use the rocket propulsion typical of all cephalopods: Water is pressed from the pallial (mantle) cavity through the hyponome or siphon (a muscular tube), which is also used to direct the propulsion. So the cuttlefish is driven backward, which it uses mainly to evade an enemy, especially on short distances. \n\nThis specimen is howering near the Lava Flow of Neira Island, Banda Sea, Indonesia \n4°30'20.418 S 129°52'57.456 E at 7m depth$

octopus close up under water, beige toning

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

European common cuttlefish - (Sepia officinalis)

Common octopus attacking camera. Mediterranean sea.

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