They crawl with their legs, and they swim really fast by turning around and flipping their tail back very fast repeatedly.
they swim
you take your feet and step... left foot , right foot , left foot , right foot... and so onor hop left right left right :)
It doesn't it only looks like it does because your moving and its so far away that a slight angle change makes large movements of items in your view
Arachnids are spiders and related animals They walk on 8 legs. Some spiders also ride the wind on a length of their silk, much like riding a mythical magic carpet.