Arctic Tern food's

Fish, crustaceans and insects are the main food of the tern, but prey varies with location. Shrimp, crabs, migrating insects and small squid are taken in flight from the surface waters; the tern also snaps up flies and moths at its breeding grounds. The tern catches fish by diving into the sea, although it rarely dives deeper than 24" and may be under the waves for no longer than a second.The tern holds fish crosswise in its sharp-edged bill and can catch one or two more fish while still carrying the first. Herring, haddock, sprats, butterfish and even small salmon are typical prey, but sand eels are especially important at breeding time, providing a nutritious and convenient-sized meal for chicks.