@natgeo
National GeographicIn the Sulfur Cave, located between Albania and Greece, scientists discovered gigantic spider webs home to more than 110,000 spiders from two species. While most caves are characterized by food scarcity, sulfidic caves like this one are rich in food and biodiversity. In this case, biofilms covering the sediment, midges and their aquatic larvae, and the huge spider colony all contribute to a thriving ecosystem. Discover more about what scientists are learning about the weird world of spider webs at the 🔗 in bio.
On the profile · Dec 16, 2025