This document summarizes key aspects of marine life. It describes three main water depths that marine animals live in and notes that the marine biome covers almost 3/4 of the planet. Specific marine creatures are then outlined, including sea stars that can regenerate lost limbs, walruses that live in large groups on land, shrimp that can reach over 30cm in length, kelp that clings to rocks and hangs into the water reaching up to 90 feet long, and algae and plankton that form the base of the ocean food web. Sources for the photos and information are listed at the end.