keratose
/ˈkerəˌtōs
/adjective Zoology
(Of certain sponges) composed of a horny substance.This contrasts with temperate and especially sub-tropical and tropical latitudes where keratose sponges can be common....
- I have taken pictures of them feeding on the yellow keratose sponges.
Origin
Mid 19th century: from Greek keras, kerat- 'horn' + -ose1.