MELBOURNE, June 16 (UPI) -- A scuba diver off the coast of Melbourne, Australia, captured video of a stunning sight: hundreds of thousands of giant spider crabs.
Sheree Marris, an Australian aquatic scientist, captured video of the crabs, which feature nearly 30-inch legs attached to their 6-inch-wide bodies, gathering on the floor of Port Phillip Bay.
Marris said the spectacle was the largest gathering of crabs she had ever seen.
"I've been diving for 15 to 20 years and I've seen a lot of cool things, but this is the largest aggregation I've ever seen -- a never-ending mass of crabs," she told 9News. "I was going in a straight line swimming and for five minutes I kept seeing thousands and thousands of them."
The crabs were making an annual migration that has previously been documented on video, but this year's migration appears unusually large, possibly the largest ever documented.