A large rock just beneath the surface of the water. It’s surface is encrusted with shells, down at the deep end, a forest of brownish green kelp and higher up, closer to the surface, a layer of fine, bright green seaweed waving in the current like grass in the breeze. Small, tiger striped fish keep flitting about, just inches above the rock, hiding in nooks and crannies. Every now and again a wave passes by, sending down a cascade of silver bubbles from the shimmering surface.