The Blue-footed Booby is strictly marine, feeding in adjacent inshore waters, tending to exploit cool, rich waters in areas of upwelling. It specialises in catch fish by plunge-diving, often in unison, catching sardines, achovies and mackerel, but also flying-fish and squid. It has been seen fishing in the company of dolphins and the Peruvian Booby. Breeding is seasonal in places and otherwise opportunistic, nesting on cliffs and islets in areas with little or no vegetation¹.