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Southern Elephant Seal
The Southern Elephant Seal is the world deep-diving champion of the mammals. It has been recorded at depths up to 7,000 feet! Well over a mile, straight down! (Though some believe the Sperm Whale dives deeper.) It is also a giant, the largest member of the order Carnivora. Males can be 17 feet long and weigh up to 7,000 pounds. That’s more than twice the weight of my car (a Toyota Rav4)!