Jellyfish are marine organisms that feed on organisms in the water. Specifically, within the different stages of jellyfish growth, their specific food will also have certain differences:
1, planula larvae: When jellyfish are in the planula stage, they do not need to eat, because this stage can basically be said to be their initial stage.
2. Hydra larvae and ephyra: As the jellyfish continue to grow, they can slowly begin to eat as they reach the hydra larvae stage. When they have four tentacles, they generally begin to eat. At this time, the tentacles are their prey organs, and at this stage they mainly eat some small plankton in the water. As the jellyfish continue to grow, to the ephyra stage, they develop a mouth, usually square, but at this time they mainly feed on plankton. Specifically, there are many kinds, such as Ostracoda, Cladocera and so on.
3. Juvenile and adult stages: When jellyfish continue to grow to juvenile and adult stages, they will develop many suckers. At this time, in addition to eating small plankton, they can also eat some shellfish larvae.
The above has introduced the characteristics of jellyfish food in different periods. As you can see, jellyfish don't need to eat when they're in their planula period. When they reach the polyp larval stage with four tentacles, they begin to eat. At this time, the tentacles developed are the tools of jellyfish predation, they will use the tentacles to prey on some plankton in the ocean.
