Cool little concept! I love the unique underwater setting very much.
Controls felt a bit weird to me. I mean, why can't I simply pick specific text messages with space or enter?
We didn't have time to figure out what was stopping space and enter from working before it was time to submit, so we moved to slash or keypad enter.
Then I think you did the right thing. In such case it's always better to ship unintuitive controls rather than broken ones ;)
