english: SPF 30 is not going to do anything  to you over there, and the water is so transparent in those lakes that the algae has nowhere to hide, really, and so they are developing their own sunscreen, and this is the red color you see.
non_english: Nepomôže vám ani ochranný faktor 30. Voda v jazerách je taká priezračná, že sa riasy nemôžu vôbec nikde skryť. Tá červená farba je ich „ochranný krém“.