Tardigrades Withstand Heat After Dehydration

Researchers have found that tardigrades are able to withstand heat after undergoing dehydration. The miniature animals, known for surviving extreme conditions, can tolerate temperatures of 85 degrees Celsius if allowed to dry out first. Tardigrades are also nicknamed water bears because many thrive in damp habitats.

The new research indicates that dehydration serves as a preparatory step that enables the creatures to endure high temperatures that would otherwise be lethal.

According to the report, the process involves allowing the tardigrades to dehydrate before exposing them to elevated temperatures. This approach runs counter to some expectations for dealing with heat stress. The research adds to existing knowledge about how tardigrades manage survival across a range of harsh environments.

Tardigrades have long been studied for their ability to withstand conditions including extreme cold, vacuum, and high pressure. The latest results focus specifically on heat tolerance linked to a prior dehydration phase. The study was published on 13 May 2026. Further details appear in the paper titled with reference number 20251033.