The sea isn't a blanket.
Sure, blankets may have waves,
and blankets ripple when you jump on them,
but a blanket does not host Atlantis.
A blanket isn't full of saline.
A blanket does not hold billions of creatures underneath it.
Instead, a blanket only holds a couple, snoring, unconscious,
unaware of the each other,
unaware of their petty troubles,
unaware of their drunkenness,
unaware of their bruises,
unaware of life, death, and the sea.