Stinger

A scorpionfish, I think it is in the same family as the stonefish, but I don't recall offhand. Sat still and smiled for me.

Being able to use a flash made things much easier for the work. Set it up and to the left, with just enough power to freeze movement, but not enough to overwhelm anything. Use a shallow DOF (4 in this case) and a reasonable ISO (I had originally set it to 800, was able to tone it down to 400) and working with fish was much more rewarding than in Emerald Isle.

Autofocus

Or more correctly, the dangers of autofocus. To make a short story long, I was working with a 28-90mm autofocus lens and in order to get all of the image in the frame that I wanted, I had to keep moving the camera further back, which threw off the frame I had in mind.

Finally I settled on this frame, and the autofocus just would not pick up the aliens. Shot after shot gave me chess pieces in focus, but the aliens were blurred. Finally I got a lock on one, only to have it end up refocusing on the chess bits.

So there's the lesson of the day, if you need focus on a particular subject, switch back to manual.