Crabs Swarm in the Bay

A 50,000-strong swarm of spider crabs has clustered at the southern end of Port Phillip Bay, delighting Museum Victoria scientists who managed to film the rare gathering. Marine scientists Mark Norman and Julian Finn said the crawling carpet of crabs covered an area the size of a football ground. Dr Norman said the crabs were normally found in small groups in the bay and Bass Strait. The reason for the mass gathering was not known, but it was likely to be related to breeding