The Gray Whale is known for traveling the longest distance of any mammal. This is due to their yearly migration between arctic and tropical waters.
The Gray Whale has a bluish-gray color with dark patches along their backs. They are distinct from most other whales because they have no dorsal fin but rather two small bumps called "humps" near their tails. Their front flippers are paddle shaped and black edged with white spots or bands; its rear flippers are relatively long compared to most other whales' and also lack a dorsal fin. Mature gray whales can reach approximately 47 feet (14m) in length and 45 tons (41,000kg) in weight.
The diet of gray whale's primarily consists of small crustaceans called amphipods and other copepods. Like most baleen whales it feeds by straining water through its comblike baleen plates which trap the food inside its mouth as water exits through the side slit-like blowholes on top of its head.