It's a mola mola! Usually seen floating solo, mola mola (also known as ocean sunfish) are the largest living bony fish in the sea. This one was spotted in Greater Farallones National Marine Sanctuary, but mola molas can be found all over the world. These gigantic fish feed primarily on jellyfish. A plastic bag can look remarkably like a jelly when it's floating on the ocean surface and can choke or otherwise harm a mola that mistakes it for a snack. So help protect mola molas by reducing your use of plastic bags and keeping trash off the streets and out of the ocean!