Moms and Babies Head North
It's May, and most of the mothers have started the long journey north with their calves. They travel close to the coast where waters are shallower, and safer from orca predators. They stop often to nurse and rest. Meanwhile, most hungry older whales are in the final stretch of their long migration to northern feeding grounds off Alaska and Siberia.
From February to May, two research teams share data from the California coast as northbound whales pass.
Facts and Photos