Quote Originally Posted by Оля
Quote Originally Posted by TATY
плавать - Multidirectional.
Они плавают = They swim / are swimming (around and about, not in any particular direction
e.g. Они плавают в бассейне - They swim / are swimming around the pool.
Here there is not set direction, they are swimming around.

to crawl - лазать / лезть I have some doubt about this pair...
лазить / лезть