Cheers guys!
Second island finished...

I really like Dr The Vikings idea for the monster, making it on several bases and treating the tentacles and head as another crew. I hope you don't mind me stealing that idea Dr?
I've tried making a couple of test pieces and if these work I'll make the rest of the creature. This is hopefully just a start....

The main body is pink foam but couldn't think of anything else to use for 'suckers' than solder made into rings and glued on. Hopefully when they're covered in polyfilla they'll look more natural. Does anybody have any better ideas I can steal?.
I think if I get to try any other tentacles I'll make them more 'bendy' looking.