sixpenceee: inverted-typo: This is actually a test showing how sponges pump water through themselves for filter feeding!They simply colored the water around them so you could easily see the process.

sixpenceee: inverted-typo: This is actually a test showing how sponges pump water through themselves for filter feeding!They simply colored the water around them so you could easily see the process.

tags: , spongebob,lol,info,cool,

from: https://www.tumblr.com/blog/view/aleeb0w/128688758993