Did you know that not only amphibians have a double life? Frogs and toads live first in the water, while young as tadpoles. But also among insects there are species that spend their youth in the water and adult life in the air. We talk about dragonflies and damselflies. More than 60 species live [...]

In times of the new coronavirus many of the tourist resorts with biological pools are concerned with how to reopen after this crisis. We recommend asking for the “Clean & Safe Establishment” seal for tourism companies, since there are already first destinations with biological pools that just received this distinction now in April. Companies [...]

In these days the newspapers showed photographs of the famous canals of Venice, but this time with crystal clear water with schools of fish clearly visible. It seems that the absence of traffic with motor boats, which permanently lift up sediments, made the water more transparent. That is, so much movement with boats keeps [...]

Water snails are a cleaning weapon in biological pools, and so welcome. Almost all species feed on the so-called biofilm, a living film of microbes, algae and fungi growing above any surface as long as there is enough water. Snails have a strong muscle, a kind of "treadmill", which serves to move them above [...]

If we would do a survey among the owners of biological pools asking what are the most loved animals in their biological pool, the winner would be certainly the tree frog. Tree frogs are small frogs capable climbing in vegetation. Portugal has the privilege of hosting two different species of tree frog, the Mediterranean tree [...]