Out of the statements provided, the following is true:
Sea Otters were nearly wiped out by the pet trade because they are so cute!
1. Sea otters faced significant threats due to the pet trade in the past. Their adorable appearance made them desirable as pets, leading to capture and exploitation.
2. The demand for sea otters as pets resulted in a sharp decline in their populations due to overexploitation.
3. Conservation efforts and regulations have been implemented to protect sea otters and prevent their exploitation for the pet trade.
The other statements about baleen whales, polar bears, and manatees contain inaccurate or misleading information. It's essential to ensure the information we share is accurate and helps in understanding the subject matter better.