Products on this list are free of the following substances, which are not ocean safe:

Benzophenone-3 (Oxybenzone), Octyl Methoxycinnamate, Ethylhexyl Methoxycinnamate, Octocrylene, 4-Methylbenzylidene Camphor, Camphor, Cinnamomum Camphora (Camphor) Oil, PABA, PEG-25 PABA, Glyceryl PABA, Methylparaben, Sodium Methylparaben, Ethylparaben, Sodium Ethylparaben, Propylparaben, Sodium Propylparaben, Butylparaben, Sodium Butylparaben, Isobutylparaben, Triclosan, Phenoxyethanol, Sodium Phenoxyethanol, Eucalyptus Citriodora Oil, Eucalyptus Radiata Leaf Oil, Eucalyptus Globulus Leaf Oil, Eucalyptus Dives Leaf/Twig Oil, Eucalyptus Staigeriana (Eucalyptus) Essential Oil, Lavandula Spica (Lavender) Flower Oil, Lavandula Angustifolia (Lavender) Oil, Lavandula Latifolia (Spike Lavender) Oil, Lavandula Stoechas (French Lavender) Oil, Isoamyl p-Methoxycinnamate, Cyclotetrasiloxane, Cyclopentasiloxane, Trifluoropropyl Cyclopentasiloxane, Trifluoropropyl Cyclotetrasiloxane, Azadirachta Indica Seed Oil

Source:

http://www.alertdiver.com/Sunscreen-Pollution

https://www.vogue.com/article/reef-safe-sunscreens-oxybenzone-free-sea-turtles-environment-stream2sea