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As the dive continued into the afternoon,
we encountered a hummocky bottom that had more burrows. Seafloor life
became more abundant. We passed through a broad swath of seafloor rich in
frilly sea pens, and we found increasing numbers of crabs and shrimp in
their burrows on the seafloor. The increase in abundance of
seafloor-dwelling organisms we observed is consistent with the
well-established change in the oxygen concentration in the bottom waters
of the Gulf of California. Although depths vary around the Gulf, there is
an oxygen minimum zone that spans roughly 400 meters to 700 meters water
depth. The seawater in this zone has been stripped of its oxygen by
vigorous decay of organic material raining down from the photic zone down
to the seafloor. Where this While the dive progressed during the
afternoon, it became apparent that summer is beginning to descend on La
Charlie Paull is delighted, bagging his first-ever rhodolith.
A number of you have been asking about Pinkie. Where is Pinkie? Little has been heard from Pinkie for the past week. Is she still on the bottom tending to her garden? Or will she emerge from the deep sea? Stay tuned for further adventures of Pinkie.
Today, compliments of our roving
reporter, we have another mystery photo. Can you determine what the
ship’s crew is doing to those big white things? Answer tomorrow.
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