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Blue Nunui (teen/adult size) Mermaid Monofin

Regular price $49.95

Did you know? Nunui means "big" in Hawaiian, perfect for our larger monofin! It's pronounced Ni-new-ee.

The Nunui monofins are for use with our JS, JM, and JL size tails.

Our patented mermaid monofin (swim flipper) is the best monofin available (US Patents 9561401 and 9925416). Not only does it help you swim like a real mermaid, it keeps feet from sliding around, is so comfortable to wear, and won't break.

Unlike other monofins, our swim fins do not require any babying. You can bounce on the tips, push off pool walls, even hop around in them without any fear of the fin breaking -- though you can break so please be careful.

Learn more about our Monofins

Customer Reviews

Based on 4 reviews
Love it, but have broken 3 now

I love this monofin, super well designed, easy to swim with, great propulsion, and easy to take on and off. I am an avid mer, I swim with this fin several times a week, but I am finding that these fins crack the same way after 1.5 years or so of use. This will be the third fin I've replaced because of the plastic breaking where it is weakest, right at the top where the hole for the straps leaves only about an inch or two of plastic which takes a lot of force when swimming. These fins are awesome, but don't expect them to last much more than a year and a half with regular use.


Amazing perfect fit and secure

love it!

Best monofin Ever!

Sophia P.

I got this monofin along with the Seven Seas Rainbow mermaid tail in mid-May, and both are absolutely incredible! I've wanted to be a mermaid since I was 5, and now I can be one! The monofin moves in the water like a real mermaid's fin would.
Thank you Suntails!