Thousands of spider crabs descend on beach

Thousands of spider crabs descend on beach
Beneath the surface, a crustacean sensation is descending on Air Peninsula oyster farms. An army of native spider crabs scuttling. In 30 years I've been oyster farming here, I've never seen this many. The aquatic arachnids can grow up to 70 centimeters wide. And they've made a long journey. They're so slow moving, but they obviously, you know, they move, you know, hundreds of kilometres. They come from outside, from the continental shelf into into the Bay here. About 20 kilometres off the South Australian coast, there's a sudden steep drop off called the continental shelf. Usually solitary deep sea creatures seeing so many in shallower waters as researchers excited They're coming into malt and we think they come in and aggregate together for protection because when they molt they're quite soft. But the consortium of crabs doesn't only attract scientists and sightseers. Sharks, rays, octopus. And so by coming together they have a strategy whereby there's safety in numbers. The other crabs that haven't molted yet that are still hard shelled stay on the outside and therefore. Provide protection to the broader group. Researchers say it's less likely metro beaches will be home to the winter spectacular, where each crab can grow up to 25% bigger by shedding last year's shell. Victoria's Port Phillip Bay is the typical hotspot each year, and it's not often seen along SA's remote coastline. It is. It is a sight to behold, that is for sure. Will de Fuvvio 9 news.
  • https://www.msn.com/en-au/news/australia/thousands-of-spider-crabs-descend-on-beach/vi-BB1pJ3jy?ocid=00000000

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