We currently have an outbreak of Drupella Snails here on Koh Tao due to more of the Drupella larvae and juveniles surviving when they should be eaten by fish and plankton feeders but when there is overfishing and the water quality has decreased due to nutrient input the more larvae survive.

So the Crystal Dive and Eco Koh Tao team went on a mission and managed to collect 2500 snails in a 2hr period.