6 [Deleted User] In: Question-Answer Which of these four-legged animals is considered a marine mammal? 6 Which of these four-legged animals is considered a marine mammal? Hippopotamus Crocodile Platypus Polar bear 1 Answer Voted Oldest Recent Random Best Answer Goto 2021-06-20T12:54:07+00:00Added an answer on June 20, 2021 at 12:54 pm The correct answer is: Polar bear. 9 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.