Sampling at one of the meltwater streams near Tres Hermanos. Photo: Mikael Hedblom

Benthic diatom mats produce large amounts of oxygen, which is released into the atmosphere. Photo: Anders Torstensson

Microscopic algae are everywhere. Even the leaves of these macroalgae (seaweed) are covered with microscopic diatoms. Photo: Anders Torstensson

The sea lions are moving fast both on land and in the water. Photo: Mikael Hedblom

Nights are getting darker at the Carlini station. Photo: Anders Torstensson