One really neat thing I did in Krabi was a mangrove kayacking trip. After a 25 minute drive from the central Ao Nang area, we reached a secluded area and begun kayacking. The water in the area was extraordinarily clear and kayacking underneath the mangroves was superb. At the end of the trip we kayacked to the natural spring that feeds that small river that we were kayacking in. The water is very clear because the mangroves act a filter for the water. The trees soak up nutrients and sediments to sustain themselves. We were able able to see several colorful fish swimming in the water.