I have a clip showing how i got the spider to float? I guess the Swimming Spiders just don't like coming up to breathe fresh air... also gotta point out that for some reason the Water Fleas "Can't See You/Aggro You" when you are above water period (even if you are swimming lol)
Clipped from my livestream:
(Mature Audiences because i tend to swear a lot and dont intend to lower my swearing down lol)