Elephant seals are not your small, cuddly marine mammals. They are behemoths. Males, known as bulls, can reach 5,000 pounds, while females, known as cows, routinely clock in at around 1,000 pounds or so.   If you’re a wildlife watcher, now is the time to check elephant seals off your life list. Between December and March, they come en masse to Point Reyes National Seashore in California to give birth and mate again. But they don’t come ashore to simply laze about and soak up the sun when it’s shining. Males are building their harems much like bull elk do, and that can sometimes lead to fights between these ponderous animals.   To learn more about elephant seals, how they spend their days, and where you can see them at Point Reyes, we’re joined today by Sarah Codde, a marine ecologist at the national seashore.