Man...just think how bad it would be if there were no ocean sponges!
Your comment made me think of the ocean floor.
First time I’ve thought of this - but what about plate tectonics? The USA and Europe is getting pushed closer IIRC.
The Pacific Ocean is increasing in size, but lava is entering the ocean floor at the rift. So say for every 1 cubic foot of new lava, but only 0.9 cubic feet “disappears”, then the ocean has less capacity. And would cause ocean levels to rise.
Seriously - I wonder if those dynamics have been taken into account? Hmmm - maybe I can get a billion dollar grant. I could buy Paul Allen’s yacht for a research vessel.