Might need a glass bottom (on the boat!) to see them
That reminds me of a fight started in a pub in Pompey by a stoker off HMS Woodlark. A bunch of American sailors off the USS Ponce (who was going to say that Woodlark was a daft name for a ship?) were in the pub. They'd been going on about how small & insignificant they thought the Royal Navy was, provoking him to enquire how their new class of glass bottomed destroyers were coming along.
"What would we need glass bottomed destroyers for" had been their rather puzzled reply. "So when you go into Pearl harbour......you can review the 6th fleet".
The ensuing punch up had required the intervention of several Naval Provosts
