Four-year-old Abu Dhabi adventure company [Noukhada](http://noukhada.ae/) offers kayaking trips through the channels of the UAE's mangroves forests covering 72 square kilometers of coastline, the second largest mangrove ecosystem in the Persian Gulf after Iran. The largest and wealthiest of the seven United Emirates, Abu Dhabi includes 213 islands, mostly uninhabited. Paddlers may encounter sea creatures such as dolphins, sea turtles, and (more rarely) dugongs.