Comments about Aqua Storm Whistle:

Had this around my neck at all times as a dive master coralling 35+ snorklers in the open ocean on a snorkle boat. They may not hear me yell when it was windy and choppy, but the whilst definitely caught their attention. I always keep in in my BC pocket when diving.

Comments about Aqua Storm Whistle:

I was in a situation where I had to use this whistle, and no one could hear it until the boat was practically on top of me. Not safe. This was not an extreme situation- a small swell, not especially windy, in the tropics. Luckily I had a large safety sausage.

Comments about Aqua Storm Whistle:

good buy
Doesn't work well underwater, but that was expected

Comments about Aqua Storm Whistle:

If they don't hear this thry're leaving you on purpose

Comments about Aqua Storm Whistle:

This thing is unbelieveably loud. You really need to put your fingers in your ears when you blow it as otherwise it will leave them ringing.

Was liked so much by the DM in Cozumel that I gave it to him, and need to get a replacement myself.