Thalassia hemprichii, called Pacific turtlegrass, is a widespread species of seagrass in the genus Thalassia, native to the shores of the Indian Ocean, the Red Sea, and the western Pacific Ocean.

[3] Its growth rate increases with CO2 enrichment, and it can tolerate lowered light conditions caused by algal blooms, allowing for it to respond positively to ocean acidification and other disturbances.

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