Green Sea Turtle eating Jellyfish - Dimakya, Philippines by Ai Gentel --Exactly why it is dangerous for plastic bags to pollute the oceans, because they are often mistaken as jellyfish and kill turtles.
A bait ball, or baitball, occurs when small fish swarm in a tightly packed spherical formation about a common centre. It is a last-ditch defensive measure adopted by small schooling fish when they are threatened by predators.
A jellyfish is essentially a floating mouth and digestive system. The jelly takes food in through its mouth and is digested in a sac-like structure which is located on the underside of its bell. Floating Mouth by perry aragon.