New batch of Save our Stygofauna t-shirts available online! This is the third print run we've done as these are so popular and worn by supporters all over Australia! Thanks to Darwin local Danny Crichton for the design. Stygofauna - think of them as blind magic prawns - are tiny critters found in groundwater aquifers. They help to purify groundwater so it is safe for humans, animals and other living organisms to use. 90% of the Northern Territory’s water comes from groundwater sources. They are absolutely essential to healthy water supplies for all living things in the Northern Territory. - are tiny critters found in groundwater aquifers. They help to purify groundwater so it is safe for humans, animals and other living organisms to use. 90% of the Northern Territory’s water comes from groundwater sources. They are absolutely essential to healthy water supplies for all living things in the Northern Territory.