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

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

Doug Perrine / White marlin {Tetrapturus albidus} with bite wound on right flank, off Yucatan Peninsula, Mexico, Caribbean Sea

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

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 / Atlantic sailfish {Istiophorus albicans} seizes fish from a bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / Atlantic sailfish {Istiophorus albicans} feeds on sardine seized from bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, Mexico, Cari...

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

Doug Perrine / Atlantic sailfish {Istiophorus albicans} bats a single sardine out of a bait ball of Spanish sardines / gilt sardine / pilchard / round sardinella {Sardinella aurita} off Yucatan Peninsula, Mexico, Ca...

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

Doug Perrine / Released Atlantic sailfish {Istiophorus albicans}showing injuries from fish hook and line and handling, is swimming normally and hunting sardines off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / Atlantic sailfish {Istiophorus albicans} with treble hook caught in mouth, off Yucatan Peninsula, Mexico, Caribbean Sea

Doug Perrine / Atlantic sailfish {Istiophorus albicans} off Yucatan Peninsula, Mexico, Caribbean Sea. Digitally manipulated

Doug Perrine / Mark Strickland photographs 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

Doug Perrine / Mark Strickland photographs Atlantic sailfish {Istiophorus albicans} hunting sardines off Yucatan Peninsula, Mexico, Caribbean Sea. Model released

David Hall / Three Atlantic sailfish (Istiophorus albicans) hunting cooperatively to force a school of Spanish sardine (Sardinella aurita) into a tight baitball and trapping them at the surface, Isla Mujeres, Mexi...