Ralph Pace / Silky Shark (Carcharhinus falciformis), Galapagos Shark (Carcharhinus galapagensis), Dusky Shark (Carcharhinus obscurus), and Black-tip Shark (Carcharhinus limbatus) group working with Yellowfin Tuna...

Richard Herrmann / Atlantic Mako (Isurus oxyrhynchus) hunting Yellowfin Tuna (Thunnus albacares) caught on fishing line, San Diego, California

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) being caught by fishermen using fluorescein, a green dye creating virtual net, San Clemente Island, Channel Islands, California

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) being caught by fishermen using fluorescein, a green dye creating virtual net, San Clemente Island, Channel Islands, California

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) being caught by fishermen using fluorescein, a green dye creating virtual net, San Clemente Island, Channel Islands, California