Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Two examples of species of the genus Xestospongia. (A) Xestospongia testudinaria (Lamark, 1815) taken from [76]. (B) Xestospongia muta (Schmidt, 1870) taken from https://commons.wikimedia.org/wiki/File:Reef3860_-_Flickr_-_NOAA_Photo_Library.jpg (CC BY 2.0).
