Carbon sinks vary

[David B. Benson]

Climate change: why we can’t rely on regrowing coastal habitats to offset carbon emissions 
Phil Williamson & Jean-Pierre Gattuso
2022 Jul 29
Phys.org
phys.org/news/2022-07-climate-regrowing-coastal-habitats-offset.html

A serious warning not to rely on overly sparse data.

[David B. Benson]

Not waving, drowning: why keeping warming under 1.5 C is a life-or-death matter for salt marshes
Neil Saintilan
2022 Jul 29
Phys.org
phys.org/news/2022-07-life-or-death-tidal-marshes.html

Salt marshes move inland with rising sea levels; such locations are now developed and unavailable.

[David B. Benson]

The oceans hold enormous carbon dioxide sequestration potential, making them an ally in the climate change fight
2022 Dec 21
Phys.org
phys.org/news/2022-12-oceans-enormous-carbon-dioxide-sequestration.html

Some unusual chemistry can be enlisted to avoid ocean acidification.

[David B. Benson]

Brown algae removes carbon dioxide from the air and stores it in slime
2022 Dec 26
Phys.org
phys.org/news/2022-12-brown-algae-carbon-dioxide-air.html

And nothing can digest the slime so it ends up on the seafloor.