The video discusses the habitats of spiders, highlighting that most live on land, while some, like the raft spider, can live in water. Raft spiders can run on water surfaces due to air bubbles trapped in their bodies, aiding in flotation. Additionally, the video covers grass spiders, which build funnel-shaped webs on grass that are not sticky.

Describe the web-building behavior of grass spiders.

What is unique about the fabric of grass spider webs?