A tourist visiting a beach in Peninsula Valdés, Argentina in September witnessed a battle for dominance between two 3.3-ton elephant seals.

Elephant seals are huge, gray and blubbery. They have a big snout and a very distinctive voice. (SOUNDBITE OF ELEPHANT SEAL GRUNTING) SUMMERS: But despite the obvious differences, elephant seals ...

It’s one of Northern California’s most famous wildlife shows. Every year, up to 10,000 elephant seals — the giant, blubbery pinnipeds that can weigh 5,000 pounds, grow as long as a Toyota Corolla and ...