breathinginbiology:Some species of crabs have a pair of paddle-shaped rearmost legs that allow them to swim through the water instead of being limited to walking along the ocean floor. 

breathinginbiology:Some species of crabs have a pair of paddle-shaped rearmost legs that allow them to swim through the water instead of being limited to walking along the ocean floor. 

tags: I Am So Many Things,

from: https://chinchillaontoast.tumblr.com/post/156628491396