Thailand live aboard North or South Andaman sea in November / December

Hi folks!

I am planning to go to Thailand this November, or early December. I can only go to South, or North Andaman sea. Which way would you go? Why? Thank you in advance.

I would go North, higher diversity of sites, I personally could spend a week on Richelieu Rock.

South has some good sites (Hin Daeng, Hin Muang, Koh Ha) but in my experience they get better in spring-time, then the whalesharks and mantas seem to appear more frequently.

Have fun,

-Morten

Koh bon, koh tai chi also; big humphead parrot.

Thank you for your responses! I am looking forward to the trip.

I would go North - heading in the direction of the Southern tip of Myanmar. Richelieu Rock is wonderful. Careful of the boats - some real cattle boats in that region, including some that advertise most. I've done 2 liveaboard trips up there. Nice diving - but expect a fair amount of dynamite fishing. Beats the water temp in San Diego :-)