Octopuses are found in every ocean in the world and on every coast of the United States. Octopuses live in coastal marine waters and spend much of their time in dens, small holes and crevices in rocks and corals. They are usually solitary and territorial. There are about 300 species of octopus and they are found in all oceans.
Most live on the seabed, but some, such as the paper nautilus, approach the surface. Octopuses feed mainly on crabs, shrimps and molluscs. Octopus (Octopus spp. They are some of the most fascinating creatures in the sea, found in every ocean of the world and in the coastal waters of all continents.
Octopus vulgaris is found in tropical, subtropical and temperate waters between the surface and a depth of 100 to 150 meters. It is not found in polar or subpolar regions. It lives in coastal waters and in the upper part of the continental shelf. Octopus of different species live in all oceans of the world.
They are highly adaptable and live in everything from small swallow pools to depths of up to 2,000 m (6,600 ft). The most common area of the ocean for them to reside in is along coral reefs and the ocean floor. They create lairs where they live and can go unnoticed in the water. They will also find small cracks and hide under rocks.
Other species of octopus live in deep, dark waters, and rise from below at dawn and dusk in search of food. If a predator gets too close, octopuses can escape quickly, shooting forward by expelling water from a muscular tube called a siphon. Since the binding agent is found within plasma and not in blood cells, there is a limit to the oxygen uptake that can be experienced by the octopus. Octopuses can open shells, maneuver rocks, and even dismantle an aquarium's filtration systems.
Octopuses have a complex nervous system and excellent eyesight, and are among the most intelligent invertebrates with the greatest diversity of behavior. I have always liked octopus and I would love to drive one, they are so interesting marine life is so epic and I want to be a marine biologist. Most young octopuses hatch as paralarves and are planktonic for weeks or months, depending on the species and water temperature. Other species of octopus live in deep, dark waters, which rise from below at dawn and dusk in search of food.
Octopuses usually fall on their prey from above and, using powerful suctions that cover their arms, bring the animal to the mouth. Connected to the brain are two organs called statocysts (sac-like structures that contain a mineralized mass and sensitive hairs), which allow the octopus to perceive the orientation of its body. Although researchers know a lot about the octopus's natural habitat and do their best to recreate it in an excellent environment, being able to observe them in captivity is extremely difficult. When threatened by predators, most octopuses release a thick cloud of black ink, composed mainly of melanin (the same pigment that gives humans skin and hair color).
The octopus has two nephridia (equivalent to vertebrate kidneys) that are associated with the branchial hearts; these and their associated ducts connect the pericardial cavities with the mantle cavity. Octopuses are solitary creatures that live alone in lairs built of rocks, which the octopus moves into place using its powerful arms. To date, nearly 300 different species of octopus have been identified, and more are being identified each year.