I assume from your other message that your son is 6. Why would you want a 4 year old or a 6 year old in a tank with a large strong wild animal? Would you throw them over the side of a boat in the ocean if a dolphin was swimming around the boat? Or put them in a monkey cage at a zoo? You will have to sign a waiver of liability releasing the company running the program from any harm done to your children - and that should tell you something (the legal status of these waivers is unclear after a recent Florida Supreme Court decision - but you will be signing a document saying it's ok if my kid gets hurt). FWIW - when swimming with dolphins programs used to be required to report "accidents" to the government (there's no requirement now) - most "accidents" involved women and small children (and the "accidents" tended to involve acts of sexual aggression against the women and children). BTW - your kids probably watch a lot of cartoons and think dolphins "smile" and therefore like them - when we adults know that's just the way their faces look.

Besides - why set up a fight between your 2 children (I can do it and you can't). Better to come up with some activities that both can do. Robyn