[eric-the-viking]

can only help you with the dive shops,yes the ones that are open now will still be open in April,if you can dive then i suggest you do a live aboard to the similian islands ,really nice dives.excellent viz plenty of marine life ,i personnallylove shark diving ,so last time i was there i was over the moon to see a couple of white tips and a school of leopard sharks and to be so close to them that you could almost touch them(we didnt of course).