The octopus inhabits all oceans in depths that vary from 3 miles to more shallow waters along shorelines. They prefer to live in protected areas along the ocean floor such as coral reefs and rocky crevices.Know More
There are about 300 species of octopus. The common octopus and briar octopus live along the Atlantic Coast, while the giant octopus and orange bigeye varieties reside along the Pacific Coast. In addition to living in protected areas, the octopus is equipped with strategies to increase its safety, including speed and the ability to expel ink into the water to confuse its aggressor. They also have autotomizing limbs that break off to allow the animal to escape.
Some octopuses are able to display color changes to blend into the background due to specialized skin cells. While some displays are used in communication with other octopuses, they are also used to appear like the surrounding rock, seaweed or other features. Deimatic displays, which are sudden colorful displays such as the appearance of giant eyes or brightly colored rings, frighten enemies away or give the octopus time to escape.
Although shy animals, octopus saliva contains poison that is normally used to catch prey but can also inflict a mortal wound on an enemy. The blue-ringed octopus is quite small but considered the most deadly. Its saliva contains venom capable of killing a human.Learn more about Octopi
Seagulls, opportunistic scavenging birds found on shorelines and in parking lots, can typically live from 15 to 20 years. Seagulls are omnivores and can easily find food sources in both urban and coastal habitats. Seagulls congregate in wide open spaces to defend against predation.Full Answer >
Most sharks live in the ocean at depths no greater than 7,000 feet; very few sharks live below 10,000 feet. Sharks are found in all the world's oceans, from the Arctic to the Antarctic, and in some rivers and lakes.Full Answer >
Tiger sharks live in both open and coastal ocean areas at depths as low as 460 feet. They are commonly located in tropical and sub-tropical waters such as the Gulf of Mexico, the Caribbean Sea, Australia and New Zealand.Full Answer >
According to EnchantedLearning.com, dolphins live in what is known as the euphotic zone, which is sometimes referred to as the sunlit zone — part of the continental shelf that extends down to depths of anywhere from 50 to 660 feet. This zone is so named because it is lit by the sun for at least part of the day.Full Answer >