Underwater world

Underwater pics from Tenggol island. The top is called Polyclad flatworm. They come in a number of colors for their outer edge. The bottom is a Nudibranch. I realise tat if going diving,it is really useful to have before hand knowledge of the underwater creatures. So will know wat to expect,when you see them, u can identify them. tat makes it really enjoyable as well...else its like juz swimming along..
.not seeing things in detail...juz looking at a big picture...

now.....i cannot resist posting this...this..this...giant CLAM...:p