Sea otters are known for being one of the cutest and most beloved marine mammals. However, there’s more to these furry creatures than just their adorable appearance. Here are some fascinating facts about the surprising lives of sea otters that you may not know.

1. Sea otters are clever hunters

Sea otters are one of the few animals that use tools to help them hunt. They use rocks to crack open the shells of clams and other shellfish. They also use their paws to feel around on the sea floor for their prey and can hold their breath for up to eight minutes while diving.

2. They eat a lot

Sea otters have a high metabolism and need to eat a lot to maintain their body heat. In fact, they eat up to 25% of their body weight in food every day. They feed on crab, clams, sea urchins, and other marine creatures.

3. They have the densest fur of any mammal

Sea otters have the densest fur of any mammal with around one million hairs per square inch. This thick fur keeps them warm in the cold ocean waters. However, it requires a lot of maintenance. They must groom themselves regularly to keep it clean and free of parasites and the oil from their skin.

4. Sea otters are social animals

Sea otters are known for their playful behavior and are often seen holding hands while they sleep. They are social animals and live in groups called rafts. Rafts can consist of up to 100 sea otters and usually consist of females and their pups.

5. They are a keystone species

Sea otters play a vital role in the ecosystem of the ocean. They are considered a keystone species because they help to maintain the health and diversity of the kelp forest ecosystem. Sea otters feed on sea urchins, which in turn prevents overgrazing of kelp forests by sea urchins. This helps to maintain the ecosystem for other marine creatures like fish and crabs.

In conclusion, sea otters are more than just cute and cuddly animals. They are clever hunters, have a high metabolism, and require a lot of maintenance for their thick fur. They live in social groups called rafts and play a vital role in the ecosystem of the ocean. Next time you see a sea otter, take a moment to appreciate these fascinating creatures and all they do for the ocean.