The gray whale is a large marine mammal known for its long migrations and distinctive gray coloration. They can grow up to 50 feet long and weigh around 40 tons. Gray whales primarily feed on small crustaceans found on the ocean floor, using a unique feeding technique called bottom feeding. These whales are found along the Pacific coast, migrating between their breeding grounds in Baja California and feeding areas in the Arctic. Gray whales are known for their friendly behavior and often approach boats, making them a popular sight for whale watchers.