Ralph Pace / Swell Shark (Cephaloscyllium ventriosum) egg case and embryo, Monterey, California

Ralph Pace / Olive Ridley Sea Turtle (Lepidochelys olivacea) females coming ashore to nest during arribada, Playa de Escobilla Sanctuary, Oaxaca, Mexico

Ralph Pace / Galapagos Shark (Carcharhinus galapagensis), Reviliagigedo Island, Mexico

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...

Ralph Pace / Humpback Whale (Megaptera novaeangliae) male and female courting, Maui, Hawaii, image taken under NMFS Permit # 19225

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Ralph Pace / Manta Ray (Manta birostris), Baja California, Mexico

Ralph Pace / Bottlenose Dolphin (Tursiops truncatus) and diver, Revillagigedo Islands, Mexico

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Short-tail Nurse Shark (Ginglymostoma cirratum), Saint Eustatius, Caribbean

Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish, Monterey Bay, California

Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish in kelp, Monterey Bay, California

Ralph Pace / Halfmoon (Medialuna californiensis) school under kelp paddy, San Diego, California

Ralph Pace / Halfmoon (Medialuna californiensis) school under kelp paddy, San Diego, California

Ralph Pace / Hawksbill Sea Turtle (Eretmochelys imbricata) feeding on algae, Caribbean

Ralph Pace / Hawksbill Sea Turtle (Eretmochelys imbricata), Caribbean

Ralph Pace / Pelagic Red Crab (Pleuroncodes planipes) group on kelp, indicators of El Nino, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) in reef, Caribbean

Ralph Pace / Hawksbill Sea Turtle (Eretmochelys imbricata) feeding on algae, Caribbean

Ralph Pace / Hawksbill Sea Turtle (Eretmochelys imbricata), Caribbean

Ralph Pace / Spotted Seven-gilled Shark (Notorynchus cepedianus), San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Ralph Pace / Giant Electric Ray (Narcine entemedor), Revillagigedo Islands, Mexico

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / California Sea Lion (Zalophus californianus) feeding on Ocean Sunfish (Mola mola), San Diego, California

Ralph Pace / Harbor Seal (Phoca vitulina) in kelp forest, San Diego, California

Ralph Pace / Spotted Seven-gilled Shark (Notorynchus cepedianus) in kelp forest, San Diego, California

Ralph Pace / Ocean Sunfish (Mola mola), San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Ralph Pace / Olive Ridley Sea Turtle (Lepidochelys olivacea) hatchlings going to sea after being released, Oaxaca, Mexico

Ralph Pace / California Sheephead (Semicossyphus pulcher) female in kelp forest, San Diego, California

Ralph Pace / Opah (Lampris guttatus), San Diego, California

Ralph Pace / Great White Shark (Carcharodon carcharias) juvenile near coast, Capitola, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) pair, San Diego, California

Ralph Pace / Sea Nettle (Chrysaora quinquecirrha) jellyfish, Saba Bank, Caribbean

Ralph Pace / Caribbean Spiny Lobster (Panulirus argus), Caribbean

Ralph Pace / Green Sea Turtle (Chelonia mydas), Caribbean

Ralph Pace / Green Sea Turtle (Chelonia mydas), Caribbean

Ralph Pace / Pelagic Red Crab (Pleuroncodes planipes) group, indicators of El Nino, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) surfacing, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish, Monterey Bay, California

Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish, Monterey Bay, California