Definitions

1. noun

The larval stage of a coelenterate, typically a free-swimming polyp with a distinctive pattern of tentacles.

“The coeloplanula stage is a critical phase in the life cycle of jellyfish, where they develop their stinging cells.”

2. noun

A free-swimming, usually bell-shaped larva of a coelenterate, such as a jellyfish or a sea anemone.

“The coeloplanula stage is an essential part of the life cycle of many marine species.”