I've been in Castara a few days now and loving it.
What I would add about the snorkeling on Little Beach is that, and I'm not sure if this is already written as a general warning somewhere for Castara, but one should be careful entering the water around the reef area as there is fire coral quite close to the shore.
Someone we met here did cut himself on it because he went swimming out there without any knowledge. I would therefore advise, if you do not have a snorkel and are thus unable to check out the situation yourself directly, to limit your swimming to between the two rocks on the left of Little Beach, or to the 5m to the right of the nearest rock and the reef as this is basically just sand.
That said, saw my first stingrays today
Saw two of the big ones (2m wingspan i'd estimate) just swimming past me near to the sandy area at the edge of the reef. I followed and ended up finding myself above one of the rays, with a stinger directly below
so I gently swam myself away. But those creatures truly are a sight to behold, especially when you are not expecting these giant things to materialise in front of you
Anyway, back to liming