We had a great time kayaking at night and seeing the BioBay. We had a reservation for 9pm and because of planning errors on our part, only got our reservation the day before. The other kayak companies were booked solid but Yokahu had room for us.
We got there, waited around for a while and eventually got a short lesson from one of the guides for our group. He explained how to kayak, what to expect, going through the mangrove channel, etc. There were about 15 kayaks in our group and 4 guides, which was a nice size. All 4 guides were helpful and hooked up to kayaks that were struggling or needed help.
When we got to the bay, we were able to put our hands in the water, and because the moon was bright, the guides had a tarp that we were able to hold up to block the moon light and better see the bioluminescence. The lead guide also gave an explanation of how the bioluminescence works and various details about the bay. We were in the bay for a fairly short time but I don't think that I would've wanted it to be longer.
Now, to address the issue that several other reviewers have mentioned- the trip out and back via the mangrove channel. The mangrove channel is narrow and requires kayakers to paddle in the dark, under mangrove trees, single file, as best they can. While it is narrower than open water, it is not narrow enough that it is difficult to navigate your kayak through and is only a few feet deep if you fall out. All kayaks had a blinking green light on the back and a green glow stick on the front so that you can see other kayaks. The night we went it was dark, but not pitch black and you could see low hanging branches and duck out of the way before hitting them. The guides warned us about low hanging branches in specific areas, taught us how to sit back in your kayak, and warned us about upcoming turns while on the trip. Navigating the channel is not that difficult (we had kayaked just once before this) and yes, you will bump into other kayaks from your group and other groups. At times you'll need to slow down or stop for others and then keep paddling. This is how a kayaking tour group works. There are 9 other tour groups and they all go through the same experience in the same channel. Some tour groups include kids, others have people that are not adept kayakers, and there are probably a few drunk idiots mixed in too. Sit back, enjoy your surroundings, and just go with it. The BioBay is one of only 5 in the world, and going through the mangrove channel at night only enhances the adventure of the trip. We had a great time, laughed a lot, and would do the whole thing again. Thanks Yokahu for giving us a unique Puerto Rican Adventure. read more