Where No Map Leads: Reflections from NASA’s S-MODE Mission

It’s like stumbling through a thick forest and breaking out into a glade. A quiet has settled on this piece of sea as the waves calm. You can’t make a good map to get to this place. In the ocean, these glades are always moving, twisting, being born into life by the collision of great currents, then breaking apart, fracturing and sinking beneath the waves. The cold water brought from below by the coastal winds creates a fog that lies heavy on the sea surface, creating this small, calm spot.

Places like this can be found by things with nowhere else to go. Throw something off the side of a boat and it will likely end up somewhere like here. We’re at a convergence zone that attracts floating debris of all sizes. In particular, it attracts minuscule plankton, along with all the things that eat them and all the things that eat those things and so on and so on. All of it dragged hereby the undulating ocean.

Dolphins surfacing at a submesoscale front on a calm, foggy day – photo taken off of the stern of the Bold Horizon. Credit: Gwen Marechal
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