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

Adult Man Stabbing and Catching Octopus in Ocean.

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

Reef Red Squid with Big Eyes Deep Underwater, Red Sea, Egypt. Ocean Cephalopod With Tentacles Swimming In The Depths.

A large squid close-up, swimming in the green aquarium fish tank illuminated with the glowing orange bright light on the street fish market in Daegu City, South Korea

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

massive bank of sardines in a shallow reef. Sardine bank or sardine run in red sea

Bigfin reef squid hovering in the saltwater aquarium with blue background. The figure of a blue squid hovering in the water with tentacles extended on the azure back.

Caribbean reef squid ,Sepioteuthis sepioidea, commonly called the reef squid,

Caribbean reef squid (Sepioteuthis sepioidea) in Grand Cayman - Cayman Islands

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 howering near the Lava Flow of Neira Island, Banda Sea, Indonesia, 4°32'7.9618 S 129°52'30.6844 E at 9m depth

Bigfin reef squid hovering in the saltwater aquarium with blue back. An image of a blue squid hovering in the water is discolored in monochrome.

A shallow coral reef with one Pharoah Cuttlefish (Sepia pharaonis) swimming alone. These Cephalopod are able to change skin colour in an instant to blend in and camouflage with their surroundings. The animal is splaying its tentacles in defensive behavior. Image taken whilst scuba diving in Phi Phi island archipelago, Krabi province, which is one of Thailand’s top travel destinations. Sony mirrorless camera in underwater housing with dual Inon Z330 strobes used.

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

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

Underwater color images of the Bigfin Reef Squid, Sepioteuthis lessoniana

The Pacu's piranha-like appearance is aptly complemented by its insatiable hunger.

High contrast image of air bubbles rising to the surface from scuba diving in the ocean.

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