Some hermit crabs do not live in shells, but occupy wormholes in coral. Species of this genus (Paguritta) are barely a centimetre in length and have a special pair of feathered antennae that they use to filter the water for food. This crab is a great example of how a species is able to establish a specialised niche for itself in a complex habitat.

Life In The Undercoral

by Shreya Yadav

Some hermit crabs do not live in shells, but occupy wormholes in coral. Species of this genus (Paguritta) are barely a centimetre in length and have a special pair of feathered antennae that they use to filter the water for food. This crab is a great example of how a species is able to establish a specialised niche for itself in a complex habitat.