Sea otters are marine mammals that live in coastal waters of the Pacific Ocean. They are members of the weasel family and are related to land animals such as skunks and badgers. Sea otters have a thick fur that helps keep them warm in cold water. The sea otter's main food source is shellfish, which they crack open with rocks.
Sea otters face many challenges for survival. One major challenge is finding enough food to eat. Sea otters must consume 25% of their body weight in food each day just to survive. This can be difficult to do since they only have access to a limited amount of resources in their environment. Another challenge sea otters face is predation from other animals such as sharks, killer whales, and large birds of prey. These predators can kill and eat sea otters, which decreases the population size and makes it harder for them to find mates and reproduce successfully. Additionally, humans pose a threat to sea otters through activities such as pollution, overfishing, and habitat destruction. All of these factors make it difficult for sea otters to survive and thrive in the wild.