Nice diagonal here, and mother nature cooperated by having the fish pointed towards us as the tern banked for you. That is a particularly pleasing shade of blue you have for the sky. I like the size of the subject in the frame but would prefer it lower within it.
Nice one Karl! You got a good pose, good control with the whites, and love the visible fish in it's mouth. I'm wishing for just a bit more up top, but it's fine as posted too.
Nailed this one! Whites seem to be nicely controlled, even in what seems to be a bit of harsh light (looking at the shadow on the far wing). The wingtip to wingtip spread is great as well.
I agree with Daniel's comments. It looks like the tern is banking slightly upward, so a putting him a little lower in the frame would be beneficial.