The Southern elephant seal is the largest carnivore living today. This seals’ size shows extreme sexual dimorphism,
possibly the largest of any mammal, with the males typically five to six times heavier than the females. While the
females average 400 to 900 kilograms (880 to 2,000 lb) and 2.6 to 3 meters (8.5 to 9.8 ft) long, the bulls average
2,200 to 4,000 kilograms (4,900 to 8,800 lb) and 4.5 to 5.8 meters (15 to 19 ft) long. The record-sized bull, shot
in Possession Bay, South Georgia on February 28, 1913, measured 6.85 meters (22.5 ft) long and was estimated
to weigh 5,000 kilograms (11,000 lb).
Southern elephant seals dive repeatedly, each time for more than twenty minutes, to hunt their prey—squid and
fish— at depths of 400 to 1,000 meters (1,300 to 3,300 ft). The documented diving records for the seals are nearly
two hours for the duration, and more than 1,400 meters (4,600 ft) in depth. [
Source]