While blue marlin inhabit all warm seas, blacks are strictly limited to the Pacific and Indian oceans. And while blue marlin seldom venture from the deep-blue open ocean, blacks are known to prowl shallow banks and near-coastal waters. Australians often use huge live or rigged dead baits to hook grander blacks, which are also taken off Hawaii, Panama and north into Mexican waters, and elsewhere. Along with the blue marlin, this apex predator is one of the ocean’s ultimate trophies. And the ultimate black to date — the all-tackle-record 1,560-pounder — came from Cabo Blanco, Peru, in 1953.