Table 1. Observed ranges in the pCO₂ of reef waters worldwide (µatm).

Site	min	max	Ref.
Enewetak, Marshall Islands	150	320	[20]
Siraho Reef, Ishigaki, Ryukyus	160	520	[88]
Tiahura Reef, Moorea, Fr. Polynesia	240	420	[57]
Yonge Reef, north GBR	250	700	[57]
Bora Bay, Miyako, Ryukyus	200	550	[56]
Rukan-Sho, Okinawa, Ryukyus	40	900	[89]
Grand Bahama Bank, Bahamas	300	380	[28]
Hog Reef, Bermuda	320	560	[23]
Kaneohe Bay, Oahu, Hawaii	250	680	[25]
Lady Elliot Island, south GBR	100	1300	[30]
Sandy Bay, Ningaloo, W. Australia	220	440	[24]