Mattrom, thank you.
There is a visceral fearlessness to the dive of a Gannet, they are like base jumpers!
'No external nostrils' worried me at first - but on reflection i realised that mouth-breathing is probably preferable to outward nose-holes if you're hitting the water at 60mph!
Thanks for a lovely compo Mattrom, even as a newby I look forward now to such clever and kindly fun midweek challenges.