This bright yellow glass sponge (Hertwigia sp.) is one of many different sponge species found in the southeastern United States. They are so named for the glass-like silicon spicules that support their skeletons.
Hertwigia
Image courtesy of Brooke et al. 2005, NOAA-OER Florida Deep Corals. Download larger version (jpg, 3.6 MB).

This bright yellow glass sponge (Hertwigia sp.) is one of many different sponge species found in the southeastern United States. They are so named for the glass-like silicon spicules that support their skeletons.

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