Life Cycle
Mackerel are prolific broadcast spawners. Individual females lay between 300,000 and 1,500,000 eggs. Their eggs and larvae are pelagic, that is, they float free in the open sea. The larvae and juvenile mackerel feed on zooplankton. As adults they have sharp teeth, and hunt small crustaceans such as copepods, as well as forage fish, shrimp and squid. In turn they are hunted by larger pelagic animals such as tuna, billfish, sea lions, sharks and pelicans.
Off Madagascar, spinner sharks follow migrating schools of mackerel. Bryde's whales feed on mackerel when they can find them. They use several feeding methods, including skimming the surface, lunging, and bubble nets.
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