Assertion: jellyfish's type | /r/Synonym | scyphistoma
Facets:
Source sentences:
text: The young larval stage, a planula, has small ciliated cells and after swimming freely in the plankton for a day or more, settles on an appropriate substrate, where it changes into a special type of polyp called a "scyphistoma", which divides by strobilation into small ephyrae that swim off to grow up as medusae.