Rib to see whales and dolphins

Hi we are visiting Dominica in few weeks time and looking at my cruise excursions I saw the rib speedboat to see dolphins and whales

Me and my family would like to go on this but p & o don't allow children on this excursion I have seen other cruise operators do offer this with children allowed

Does anybody know if there are vendors ashore offering this trip and if so how much

Thanks

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I'm sure by the timing of your OP that you have already gone on your trip.

But just wanted to post for everyone how great the Whale & Dolphin Watch by RIB boat was. We did it a few years ago in January and saw both whales and dolphin. The fast RIB boat added to the fun.

Was one of the best excursions we're done in the Caribbean.