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.
WAKE - via Phil Jones. This perfectly combines my love for all things stripe and all things boat. The blue sends me overboard. this picture is very creative and leaves you thinking about what the boat is really traveling through.