Compare two animals

Hawaiian monk seal

Length

1.8 to 2.1 m (adults, about 6 to 7 feet; males and females are similar in size)

Weight

180 to 270 kg (adults, about 400 to 600 pounds)

Lifespan in the wild

up to 30 years (can live more than 30 years, but few do)

Lives in

Pacific Ocean