Big sponge, Foggy Reef, Saspotato

Giant barrel sponges loom over a Bahama reef

Reef sponge hi-res stock photography and images - Page 17 - Alamy

Coral block, coral reef, overgrown, various multicoloured sponges and corals, Little Tobago, Speyside, Trinidad and Tobago Stock Photo - Alamy

Researchers Find Massive Rare Sponge Mounds Hiding in the Deep Sea

Giant barrel sponges are hijacking Florida's coral reefs

Glass Sponge Reefs Discovery

Stunning Sponges of BIOT (KSLOF)Living Oceans Foundation

Devil's Grotto - All You Need to Know BEFORE You Go (with Photos)

Huge sea sponge discovered off Hawaii

Giant barrel sponges loom over a Bahama reef