Marine microfauna from the ocean off Hawaii come under closer focus. The blue button, a relative of the jelly fish, is not one organism, but a colony, joined at the gas-filled hub which keeps it afloat. Each tentacle has a specialized role, such as catching prey, reproducing, or digesting. [https://www.worldpressphoto.org/collection/photo/2008/nature/david-liittschwager/11]