These sea-bed assemblages of urchins, starfish and other echinoderms, plus molluscan shellfish, probably relied on the large sponges for shel ter, both from currents and predators - a role more usually held by corals
These sea-bed assemblages of urchins, starfish and other echinoderms, plus molluscan shellfish, probably relied on the large sponges for shel ter, both from currents and predators - a role more usually held by corals