Ocean algae is a broad term that encompasses many different species of algae that live in the ocean. One of the most common types of ocean algae is KELP, which is a large, brown seaweed that grows in shallow, nutrient-rich waters. KELP is an important part of the marine ecosystem, providing food and shelter for many species of fish and other marine life. It also helps to protect shorelines from erosion and can be used as a source of food and medicine.