free-swimming

A genus of small free-swimming Tunicata, shaped somewhat like a tadpole, and remarkable for resemblances to the larvae of other Tunicata

free-swimming as larvae

The larva of certain starfishes as developed in the free-swimming stage.

An order of free-swimming marine worms, of which the genus Sagitta is the type

provides locomotion in free-swimming unicellular organisms n any of the short curved hairs that grow from the edges of the eyelids