My fins need cleaned!

[Scuba_Jenny]

Oh how I loved those yellow fins all brand new! But that was a few years ago and now they have black spots on them. Looks like mold, but doesn't come off. They get rinsed after every dive. I tried soap and water, a magic eraser, and a few mild cleaners, but nothing.
Help!

 

[Scuba_Jenny]

 

[Bubblesong]

Bleach would kill mildew, so would leaving in the sun, not sure it’s best for plastic fins, and would fade yellow. Sell and buy new pair?

 

[Jcp2]

How to Remove Mold From Rubber | Hunker

 

[flyboy08]

Spray paint them.

 

[Angelo Farina]

It can look strange, but.... Have you tried WD40?
It has miracolous effects on various type of rubber and plastic. Just spray, wait 30 minutes, then clean away with a piece of cotton fabric, rubbing as required....

 

[Couv]

Plenty of advice, I'm looking forward to what worked.

 

[martincohn]

Clean um? Hell wear them like a badge of honor!

 

[BoundForElsewhere]

Armor All?

 

[k4kafka]

Don’t suppose you might consider asking the manufacturers what they recommend...