Class Field Trip to Pt. Reyes National Seashore

One of my favorite things to do is to lead a class on an outdoor field trip. If I could get paid for any job in the world, that would be the job, that or being the next David Attenborough! Today, even though I didn't get paid and I'm not even an official GSI (graduate student instructor), I did get to co-lead the Behavioral Ecology class at Berkeley on a field trip to Point Reyes National Seashore, one of the most beautiful pieces of land here in northern California.

The class is learning about how biologists study animal behavior, in class, in lab and in the field. My advisor, Eileen Lacey, is the professor, and together with the two GSI's, we took them to a place called Chimney Rock, famous for the elephant seal haul out where male seals establish territories in order to watch over their harem. The students got a chance to observe males duking it out for access to the females who had finished nursing their pups and were going into estrous.




Elephant seals are amazing marine mammals. They can dive to depths of 2000 feet and hold their breath for half an hour. Some have surpassed even that. Their physiology is the subject of many studies and scientists are continually intrigued by how they are able to withstand the tremendous pressures of the deep sea. Elephant seals haul out for a period of time twice a year, in the winter for breeding and in the summer for molting. The rest of the time, they are out to sea feeding. The males head off toward the Aleutians while the females feed in the open Pacific or Hawaii. These animals were once hunted to near extinction but after given official protection, have rebounded to substantial population numbers and are still growing.

The purpose of today's field trip was to give the students a chance to observe elephant seal behavior, to construct an ethogram by naming and defining behaviors, and then to ask a question and develop hypotheses about interactions between males and females, males and males, females and females. Next, they were to choose one of 3 data collecting techniques they had learned about earlier in order to answer their question. Finally, they were to collect the data, which we would analyze later. Designing a research project is pretty difficult, even for those of us who do it regularly. For many of these students, it was the first time. However, they did great and I think they learned a lot. The seals did great, too, and gave us a lot of behaviors to watch. We saw some serious fighting. We saw some serious mating. We heard some crazy vocalizations. And we had a great time. On top of that, the sun came out! What a way to spend a Saturday in the middle of February!