Octopuses, jellyfish, sharks, sea stars and sea turtles are a few of the numerous animal species that inhabit the oceans. Since most plants need sunlight to carry out photosynthesis, many underwater plants make their homes close to the shore. Phytoplankton is one of the most common plant types.
The eight-armed octopus possesses special sensory capabilities that allow it to taste its food with the suction cups on its tentacles. The creature has a few defense mechanisms and tactics to use when it comes under attack, which include squirting black ink at the enemy and detaching a limb for quick escape. The mimic octopus, as its name suggests, can mimic threatening creatures such as eels and lionfish as an additional defensive measure.
Jellyfish are so named because of their flexible jelly-like bodies. Jellyfish also possess tentacles, which they use these to deliver a powerful, poison-releasing sting to attackers. Species vary greatly in size, and one of the largest types is the lion mane jellyfish, which grows up to 120 feet long.
Green sea turtles spend much of their lives under the water, but as with all mammals, they rely on the air above to breath. They are able to hold their breath for hours. For reproduction, these creatures visit nearby beaches to lay their eggs. Although they live in oceans across the world, they are endangered by excessive hunting and habitat destruction.