..sometimes it happens that a marine biologist, wishing to study some related problem, will transfer a whole colony of the worms into the laboratory, there to establish them in an aquarium, where there are no tides. But twice each day Convoluta rises out of the sand on the bottom of the aquarium , into the light of the sun. And twice each day it sinks again into the sand. Without a brain, or what we would call a memory, or even any clear perception, Convoluta continues to live out its life in this alien place, remembering, in every fibre of its small green body, the tidal rhythm of the distant sea.

Rachel Louise Carson

The sea around us

The edge of the sea

Under the sea-wind