Well it was more like ‘boo’ than ‘bump’ as this rough rock crab (Nectocarcinus integrifrons) stood its ground.

I am not sure who was more surprised as I swam past a pylon to find this guy, claws reared, and that unmistakable ‘do you want a piece of me!’ look in its eyes.

I am sure I could have taken on the beast if I was feeling belligerent but there would be blood in the water, my blood and I was not looking to invite an even bigger sparring partner this time around.

So I dipped my mask and swam by with a nice wide birth. Perhaps next time.