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

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

tags: Nash0077,

from: http://gnash0077.tumblr.com/post/89143347685