Chris & Monique Fallows / Indo Pacific Sailfish (Istiophorus platypterus) feeding on sardines (Sardina pilchardus), Isla Mujeres, Mexico, March.

Chris & Monique Fallows / Indo Pacific Sailfish (Istiophorus platypterus) feeding on sardines, Isla Mujeres, Mexico.

Chris & Monique Fallows / Indo Pacific Sailfish (Istiophorus platypterus) feeding on sardines, Isla Mujeres, Mexico.

Claudio Contreras / Atlantic Sailfish (Istiophorus albicans) attacking school of sardine (Sardinella aurita) bait ball. Isla Mujeres, Caribbean Sea, Mexico.

Pete Oxford / Atlantic Sailfish (Istiophorus albicans) hunting Round Sardinella (Sardinella aurita), Isla Mujeres, Mexico

Pete Oxford / Atlantic Sailfish (Istiophorus albicans) hunting Round Sardinella (Sardinella aurita), Isla Mujeres, Mexico

Pete Oxford / Atlantic Sailfish (Istiophorus albicans) hunting Round Sardinella (Sardinella aurita), Isla Mujeres, Mexico

Pete Oxford / Atlantic Sailfish (Istiophorus albicans) group hunting Round Sardinella (Sardinella aurita), Isla Mujeres, Mexico

Doug Perrine / Atlantic sailfish {Istiophorus albicans} hits sardine with bill while feeding on bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, M...

Doug Perrine / View from below of silhouette of diver and Atlantic sailfish {Istiophorus albicans} attacking bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan...

Doug Perrine / Atlantic sailfish {Istiophorus albicans} attacking bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, Mexico, Caribbean Sea, Digitall...

Doug Perrine / Large group (at least 18) of Atlantic sailfish {Istiophorus albicans} attacking bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, Me...