The sunscreen may actually be more damaging than the air travel.
> It turns out that oxybenzone can be toxic to baby coral at levels as low as 62 parts per trillion. In plain English, that's equivalent to one drop in 6.5 Olympic swimming pools. Dr C. Downs surveyed reefs in Hawaii and the US Virgin Islands. His team measured levels as high as 1,400,000 parts per trillion. That's more that 20,000 times higher than the toxic levels.
> It turns out that oxybenzone can be toxic to baby coral at levels as low as 62 parts per trillion. In plain English, that's equivalent to one drop in 6.5 Olympic swimming pools. Dr C. Downs surveyed reefs in Hawaii and the US Virgin Islands. His team measured levels as high as 1,400,000 parts per trillion. That's more that 20,000 times higher than the toxic levels.
http://www.abc.net.au/radionational/programs/greatmomentsins...