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.
Puget Sound’s killer whales looking good-. New drone photo technology is allowing scientists to get a better look at Northern and Southern resident orcas in the Salish Sea. A northern-resident killer-whale family is shown above.