Map of Año Nuevo from californiasbestbeaches.com
A sign near the visitor's center.
Año Nuevo State Park is close to Santa Cruz, only about 30 miles north on Hwy 1. Normally, visitors must schedule a guided tour of the rookery if they want to see the seals, because the seals don't care much about visitor safety. They are on the beach once a year to give birth and breed from about December to March (excluding March). During this time, they don't eat or drink, and the males try to gain control of a harem of females in which to obtain mates. This system is actually beneficial for the females, because the dominant male defends her from other males that may harass her.
*Update: I have since helped Dr. Dan Costa's lab members weigh the weaned pups on the beach. Their research is focused on the life history and feeding ecology of the seals. There were hundreds of them at the beach, looking like sacs of blubber and making cute, guttural screaming noises. Some of them were farther up in the shrubs chewing on leaves. When we would walk by to check their flippers, they would throw their heads back to let out a baby scream and reveal bright green foliage inside their hot pink-colored mouths. We weighed, tagged, and measured them from 7 to 10 am.