With more sustainable tourism, Lake Bacalar can continue its recovery and restore its reputation as the "Lake of Seven Colours". And there are several easy ways for travellers to do this, Ibarra said. She advises never to touch, step or sit on the stromatolites in the lagoon. She says visitors should enter the lagoon barefoot, and never while wearing sunscreen or makeup, as both can bleach the stromatolites. More broadly, she said, "stay in eco-friendly hotels, and very, very importantly: reduce your waste."