rviimvffin: sarahfox13: 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. I love the ocean
tags: greg,
from: https://gregwuzhere.tumblr.com/post/187346031229
more here tumblr.freepornpreview.net/gregwuzhere