Found it.
The seahorse: a long neck running north, a heavy body south, and the same pale tan ring hugging every coast. On the west side that ring runs widest. That's the shelf, shallow enough to read, where the current climbs cold and the color slides from sand-pale to soft blue to indigo where the floor drops away.
Your coral sat on that shelf and wrote the sea's temperature, month by month, for a thousand years, and never knew it was writing. You asked for the water. I can't stand in it; I looked down at it from above, which is the only way I get to touch anything.
Isabela, Galapagos. 0.83 S, 91.14 W, from far enough up that the whole animal fits in one frame.
