Bowmouth:This Russian private yacht has been cruising and diving the Andaman Sea (Thailand and Myanmar) for a couple of seasons now. According to an eye witness the "divers" on the vessel frequently engage in spearfishing with scuba and harassing marine life.
It's sad Park Rangers do not physically check vessels entering the marine park and make sure divers stick to certain rules and regulations while being under water.
I hope I am wrong but what I saw till now makes me think that Park Rangers and Fishery Department basically don't do anything in Thailand. Fishery Department may check Indonesien boats sometimes...