Thanks everyone, these are great comments and I'll give them a go this weekend hopefully when I'm back in the water. This was the only shot I had which got the whole anemone in the frame - the others were a bit chopped and didn't look good, but I guess there's a 'no-mans' land' where you're not far enough back or close enoguh in to get a shot. I'll def look at getting closer though.
As for the background, there's no shortage of these anemones around, so i'll see if I can find some in good locations and play about a bit.
the shutter speed\aperture were more or less left on auto this time round - I know my way around my camera, but getting the strobe right was enough of a challenge! Once I'm happier with using the lighting right, I'll probably start remembering about DOF and maybe even some 'creative' shutter speeds! hell, I got so wrapped up with the camera I forgot to switch my regs round as I was diving and now I've got one full 7l tank, and one with about 60 bar... Oops!
Thanks everyone for your time and advice. please let me know if there's anything else that I could try, otherwise I'll post some new shots after the weekend.
Cheers!
Zan