I really like them all. This is one ad campaign I would love to get involved with.
Have you entered any of this for next year's Chip Shop Awards? This is a brilliant site for all creatives, to enter their fictitious campaign pieces like this. This is used by the industry giants to showcase work that is normally too clever, risqué, fictitious or subtle for general advertising.
As for ideas, how about..?
You can't say fish, without saying Shh!
You can't say ocean, without saying Shh!
You can't say ships, without saying Shh!
You can't say shore, without saying Shh!
You can't say sea shells, without saying Shh!
David Attenborough, kneeling down at a rock pool, scooping out ear plugs that have fallen out of all of the seals/sea lions' ears
Jean Michel Jarre's album Waiting for Cousteau (Yes that one, Jacques), with a mute icon over it, see below...
Here'e the last track on the album...