Sebastian Kennerknecht / Sea Otter (Enhydra lutris) researcher Karl Mayer and volunteers from the Monterey Bay Aquarium pushing boat into water to subsequently release rescued otter, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarian Mike Murray stitching up rescued otter after surgery, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarian Mike Murray performing surgery on rescued otter, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) being measured before undergoing surgery, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) trio that was rescued swimming in seclusion tank, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarians Mike Murray and Marissa Viens performing surgery on rescued otter, Monterey Bay Aquarium, Monterey Bay, California

Joel Sartore / Photo Ark / Laysan albatross (Phoebastria immutabilis) head portrait, Monterey Bay Aquarium. Captive.

Russell Laman / Two Sea otters (Enhydra lutris) floating on their backs among the tops of a Giant kelp (Macrocystis pyrifera) forest. Behind, an onlooker kayaks in front of the Monterey Bay Aquarium, Monterey, Califo...

Russell Laman / Sea otter (Enhydra lutris) floating on its back carrying its pup on its chest. Behind, piers of the Monterey Bay Aquarium are visible. Monterey, California, USA. August. Endangered.

Joel Sartore / Photo Ark / Blubber jellyfish (Catostylus mosaicus) portrait, Monterey Bay Aquarium. Captive, occurs in Indo-Pacific Ocean.

Joel Sartore / Photo Ark / Black sea nettle (Chrysaora achlyos) portrait, Monterey Bay Aquarium, California. Captive.