California sea lions live near the rocky coastlines of the Pacific Ocean where they group together in colonies or rookeries on large rocks near the water. These marine mammals are able to get around equally well on both land and in water. California sea lions are able to reach speeds of 25 miles an hour and have the ability to "slow their heart rates to allow them to remain underwater for nearly ten minutes before surfacing to breathe". This capability gives the sea lions a better opportunity to catch their prey which consists of fish, squid, and shellfish.