We are going to Khao Lak mid December and after reading through this forum and others, I am even more confused about which islands would be better for a 2 night 3 day snorkeling trip. I thought the Surins were better for snorkeling but read the coral bleaching was significant and that there aren't as many fish as before. I also saw that the currents are stronger and the water clarity is less than the similans. It seems the similans are closer to Khao Lak and has the added benefit of allowing my husband to possibly jump on another boat and do a dive. We are looking at Wicked Diving's snorkel trip to the Surins or Poseidon's to the Similans. Any opinions would be greatly appreciated. Thanks!