Final answer:
The gray whale is known, along with the humpback whale, for having one of the longest feeding and breeding migrations in the animal kingdom.
Step-by-step explanation:
The humpback whale and the gray whale have the longest of all migrations for feeding and breeding. Migration is a critical ecological process and an adapted response to the variation in resource availability. It is impressive to note that some species travel great distances to ensure their survival, just like wildebeests cover over 1800 miles each year in search of new grasslands. Whales, being majestic migratory animals, also travel thousands of miles annually, engaging in their long migratory routes predominantly for the purposes of calving (giving birth) in the warmer equatorial waters and feeding in the colder, nutrient-rich polar waters.