An elephant seal rests nearby, occasionally bellying up toward the penguins, who seem unperturbed but make space, just in case.

FORBES: Go with the Floe

We jumped from the imminent attack of one fur seal, into the flappers of another, passing en route the odd bull elephant seal weighing in at about four tons.

CNN: STORY HIGHLIGHTS

Dr. Kenney, who died Feb. 14 at age 77, played physician to all the marine park's captive animals, including penguins, dolphins and Google the Great, a one-ton elephant seal he personally bagged in Mexico.

WSJ: The Whale Doc Who Kept Sea World Healthy

Until recently, the only large mammal known to produce seismic signals was the elephant seal, a species whose notoriously aggressive bulls slug it out on beaches around the world for possession of harems of females.

ECONOMIST: Extra sensory perception