How much dose a sea otter weigh?

The weight of a sea otter can vary depending on the species and individual. On average, sea otters weigh between 14 and 45 kilograms (30 to 100 pounds). However, some species, such as the southern sea otter, can weigh up to 90 kilograms (200 pounds). Sea otters have dense fur that helps them stay warm in the water, but they also have a thick layer of body fat that helps them stay buoyant and conserve heat.