These are the swim goggles of probably the best Freedive Community in the World. The Orang Laut or Bajos, what literally means Ocean People, are Sea Gypsies and used to live mainly on sea and barely on land. Studies saying, that the Bajos can see twice better in the water without goggles than the rest of the world population.
You can find this unique Tribes mainly in the Philippines, Malaysia, Indonesia and Andaman Island.
Thank you for this interesting story @thomas.dirnthaler
You have a great Freedive Picture or Story, tag us with breathlessexpeditions