flacaltenn
Diamond Member
Ooooooohhhh so regulating human activity is a good way to protect the reefs? Who would have fucking thunk it.From the abstract to the paper referenced in the article..
Toxicopathological Effects of the Sunscreen UV Filter, Oxybenzone (Benzophenone-3), on Coral Planulae and Cultured Primary Cells and Its Environmental Contamination in Hawaii and the U.S. Virgin Islands - Online First - Springer
The LC50 of planulae exposed to oxybenzone in the light for an 8- and 24-h exposure was 3.1 mg/L and 139 µg/L, respectively. The LC50s for oxybenzone in darkness for the same time points were 16.8 mg/L and 779 µg/L. Deformity EC20 levels (24 h) of planulae exposed to oxybenzone were 6.5 µg/L in the light and 10 µg/L in darkness. Coral cell LC50s (4 h, in the light) for 7 different coral species ranges from 8 to 340 µg/L, whereas LC20s (4 h, in the light) for the same species ranges from 0.062 to 8 µg/L. Coral reef contamination of oxybenzone in the U.S. Virgin Islands ranged from 75 µg/L to 1.4 mg/L, whereas Hawaiian sites were contaminated between 0.8 and 19.2 µg/L. Oxybenzone poses a hazard to coral reef conservation and threatens the resiliency of coral reefs to climate change.
LC50 and LC20 refer to the concentrations that kill 50% or 20% of the test specimens..
The tip-off here is the HUGE RANGE that they "found" in the US Virgin Isl..
To go from 75uG/L to 1.4mG/L is a huge range. And my bet is -- those largest concentrations --- if accurate, where taken in small ISOLATED areas where tourists rent snorkels and fins and float over a small portion of reef.
Situations like that are EASILY remedied by requiring showers before renting the gear and advising on wearing tee shirts or other covering instead. I'll bet a big one that those readings that are high enough represent EXTREMELY tiny portions of coral reef habitat..![]()
Did I say REGULATE?? Why is it that lefties always assume there should a law, a bureau of enforcers, and a lot of red tape. A simple sign at the flipper rental ASKING for compliance and telling them WHY would probably do --- except for maybe hard-asses like you.. We'd have a special line where cavity searches for illicit sunscreen are done on folks like you..
