Their baleen – a filtering system in their mouths that they use to sieve small morsels of food from the seawater.
They measure between 12.2-15.2m and weigh a colossal 30-40 tonnes!
They’re the only species of whale that feeds mostly on the ocean floor. They mostly eat organisms from the sea bottom.
They’re shallow water feeders so you’ll find them close to the coastlines.
Estimated to be fewer than 130.
There are many threats to their survival including: noise disturbance from oil and gas development, entanglement in fishing gear, being struck by ships, and pollution.
Western gray whales feed during the summer in Russian waters then migrate south to breed, during which time they do not eat.