Jellyfish like to eat fish, shrimp, crabs and tiny plants,
The jellyfish and algae have a special relationship.
The jellyfish rotates and swims around the coral to make sure that algae get enough sunlight. The algae in the coral gives the jellyfish some energy and nutrients in return.
70% of the oxygen comes from the ocean. Reefs are the most important part of the ocean and without them, marine life would die. No coral reefs, means no oxygen from the ocean.
Jellyfish need less oxygen that other animals that live in the coral reef.
Algae living in the coral reef also produces oxygen.