It’s early afternoon. The sun is beating down and mosquitoes are humming. Another decent day’s catch is unloaded, men sweating with the effort. If it weren’t for the breeze, the stench would be unbearable. Today’s tally: more than 100 sharks, some weighing close to 1,000 pounds and reaching nearly 20 feet in length. The catch includes leopard (tiger), dusky, hammerhead, nurse, sand sharks and sawfish—nothing unusual in the shallow (15 feet) waters surrounding Big Pine Key.