Richard Herrmann / Smooth Hammerhead Shark (Sphyrna zygaena), Nine Mile Bank, San Diego, California

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) and Blue Marlin (Makaira nigricans) beside floating kelp, Nine Mile Bank, San Diego, California

Richard Herrmann / Atlantic Bluefin Tuna (Thunnus thynnus) school, Turkey

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) pod, Nine Mile Bank, San Diego, California

Richard Herrmann / Blue Whale (Balaenoptera musculus) feeding on krill, Coronado Islands, Baja California, Mexico

Richard Herrmann / Black Sea Nettle (Chrysaora achlyos), Coronado Islands, Baja California, Mexico

Richard Herrmann / Pacific Sea Nettle (Chrysaora fuscescens) group, Carmel, Monterey Bay, California

Richard Herrmann / Research submersible submerging to explore hot vents, Danzante Island, Baja California, Mexico

Richard Herrmann / Garibaldi (Hypsypops rubicundus) amid kelp, San Clemente Island, Channel Islands, California

Richard Herrmann / Blue Shark (Prionace glauca), San Diego, California

Richard Herrmann / California Yellowtail (Seriola lalandi) pair, San Diego, California

Richard Herrmann / California Sea Lion (Zalophus californianus) predating on Squid (Loligo opalescens), Silver Canyon, Catalina Island, California