Photographed surfacing in the Sea of Cortez, Mexico, this whale is the largest animal on earth and has been known to reach 110 ft. (33 m) and up to 200 tons. The photographs in this gallery are drawn from the book Among Giants: A Life with Whales.
Seen from above, four belugas skim the surface in Admiralty Inlet, Nunavut, Canada. Belugas are sometimes called the canaries of the sea because even if you can't see them, you can hear them.
Three mating bowheads surface in Isabella Bay in northeastern Canada. In recent years, the Baffin Island bowhead has improved from endangered status to become a species of least concern.
The population of these medium-size, toothed Arctic inhabitants appears stable, but the narwhal has been deemed particularly vulnerable to climate change.
A female, above, and a male swim in shallow feeding flats near Vancouver Island, B.C., Canada.
Southern Right Whale
A scraped-up calf swims near its mother in a mating group near Patagonia, Argentina.
A female hangs quietly in a 60-ft. (18 m) deep-water column in Maui, with a male escort below it.
White Sperm Whale
A very young and rare sperm whale swims with its mother in the Azores, Portugal.
A dwarf minke, the most abundant of the baleen whales, swims in the Great Barrier Reef, Australia.
Jason Sturgis shoots behavioral footage of a yearling humpback whale and its mother in Maui, Hawaii. Click here to learn more about the book Among Giants: A Life with Whales.