Free-swimming

a.	1.	(Zool.) Swimming in the open sea; - said of certain marine animals.
	2.	(Zoology) able to swim about; not attached to a stationary object; - of aquatic animals.

Adj.

1.

free-swimming - (of animals) able to swim about; not attached Synonyms: unattached

animal, animate being, beast, brute, creature, fauna, unattached, vagile