California Sea Lion (Zalophus californianus) Young hauled out on Zodiac near photographer at Los Islotes in the Gulf of California (Sea of Cortez), Mexico. Model released.

California Sea Lion (Zalophus californianus) mother and pup. Los Islotes in the Gulf of California (Sea of Cortez), Mexico.

California Sea Lion (Zalophus californianus) mother and pup hauled out at Los Islotes in the Gulf of California (Sea of Cortez), Mexico.

California Sea Lion (Zalophus californianus) hauled out on a Zodiac surrounded by snorkelers. Gulf of California (Sea of Cortez), Mexico.

California Sea Lion (Zalophus californianus) young with monofilament fishing line caught around its neck (notice open wound caused by line). Los Islotes in the Gulf of California (Sea of Cortez), Mexico.

Whale Shark (Rhincodon typus) Young with boats and watchers. El Mogote, La Paz, Baja California Sur, Mexico.

Adult Brown Pelican (Pelecanus occidentalis) head detail in breeding plumage (note the very dark neck) fishing near Isla Los Islotes in the Gulf of California (Sea of Cortez), Mexico.

The Lindblad expedition vessel m/v Sea Lion in Honeymoon Bay on Danzante Island in the Gulf of California (Sea of Cortez), Baja California, Mexico.

Shark dorsal fins cut from various species in the Shark Fining panga fishery. Gulf of California (Sea of Cortez), Mexico.

Bottlenose Dolphins (Tursiops truncatus) bow riding a pleasure yacht. Los Islotes in the lower Gulf of California (Sea of Cortez), Mexico.

California Sea Lion bulls (Zalophus californianus) Two young bulls mock-fighting. Gulf of California (Sea of Cortez), Mexico.

California Sea Lion (Zalophus californianus) Adult bull hauled out (note the well developed sagital crest denoting a male) at Race Rocks, British Columbia, Canada.

California Sea Lion (Zalophus californianus) with watchers on boat. Los Islotes in the Gulf of California (Sea of Cortez), Mexico.