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...

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...

Graham Eaton / Rainbow Trout (Oncorhynchus mykiss) in a lake, Lancashire, England, UK, February.

Doug Perrine / White marlin {Tetrapturus albidus} chasing teaser bait, off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / White marlin {Tetrapturus albidus} off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / White marlin {Tetrapturus albidus} off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / White marlin {Tetrapturus albidus} off Isla Mujeres, streaming bubbles from swiping at bait on surface, off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / White marlin {Tetrapturus albidus} retracting dorsal and ventral fins to accelerate, off Yucatan Peninsula, Mexico, Caribbean Sea