22/05/2026
🌎 International Day for Biological Diversity 🌎
Today, 22 May, is the United Nations International Day for Biological Diversity. The theme - acting locally for global impact – major changes to protect our precious biodiversity can begin on a small, local scale to help ensure the future.
Why is biodiversity important? Biodiversity, an inventory of living species, can be fragile: currently, one million animals and plants are threatened with extinction.
Caves are home to a wide range of fascinating creatures adapted to life in darkness, although most people are unaware of their existence. Much of the biodiversity of caves is in fact yet to be discovered.
Jenolan’s world-class caves host several unusual species that live either all or part of their lives in caves, part of a unique subterranean ecosystem with each species dependent on others.
🦇 Cave bats feed on insects outside of the caves but sleep or hibernate within the caves.
🕷️ Tiny eyeless, colourless creatures like springtails feed on bat guano deposited in the caves, and in turn are food for underground predators like arachnids (opilionids, spiders and mites).
🕸️ Humans enter our caves for tours, maintenance and research. Methods are being trialled for the protection of cave spiders and their delicate webs during essential cave cleaning: spiders are located and covered carefully or otherwise protected while cleaning is in progress. Successful methods will be shared with the greater cave community, local action with a wider reach to protect these irreplaceable species.
What we protect here today helps safeguard biodiversity for tomorrow! 🌎
Photos:
1: Laetesia weburdi, a small spider named for Jenolan’s James Carvosso (‘Voss’) Wiburd (note the mistaken spelling!)
2: A tiny, cave-adapted springtail on a stalagmite in the Orient Caves
3: An Eastern Horseshoe-bat (Rhinolophus megaphyllus) on cave crystal in the Ribbon Cave
4: Plastic sheeting is draped across rocks to protect cave spiders and their fragile webs to protect them from mist or water.
Photo: Anne/JenolanCaves