This is a good impulse dance, first person stands - feed
as if a seaweed on the rock, eyes closed, the other is the ocean and can give
impulses to move them.

Variations: the ocean can be more like contact dance, especially if you have
two or better three as teh ocean. Eventually the "seaweed" can lose contact with
the rock and with eyes closed allow themselves to be given contact-dance style
impulses.