OtterKnow Kids Encyclopedia

Kelp is a giant type of seaweed that grows in the cold, shallow parts of the ocean. It is one of the fastest-growing living things on the whole planet! Giant kelp can reach over 150 feet long, making it taller than a ten-story building.

Some kelp can grow up to two feet in just one single day! Kelp has little air-filled bubbles called “bladders” on its leaf-like blades that work like tiny floaties to help it reach toward the sunlight. Kelp stretches from the rocky bottom of the sea all the way up to the sunny surface.