Simple and effective. The last line is strong and concise in the way a haiku's last line should be. Great job.

Wonderful, the contrast between a seemongly smooth surface and the helplessness underneath. One can picture this literally as a sea with someone drowning in the depths, and also, of course, apply it to people who seem happy on the surface yet screaming with pain inside.

oh no! they're drowning!

Anyway, I love the haiku, Johnny dear... I love all haikus in general... almost. ^^

Wow, this is almost exactly how i feel.Great haiku.