Stingray Ambushes Army Of Crabs | Blue Planet II | BBC Earth
A video on YouTube. In Documentaries, a Krater category.
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An army of hundreds of thousands of spider crabs gathers in Australian waters near winter to molt simultaneously, offering safety in numbers despite the threat of stingrays.
From the video
Answers: Why do spider crabs gather in massive armies in Australian waters?
- spider crab aggregation
- crustacean molting
- marine predator avoidance
- Australian marine life
What it concludes
- hundreds of thousands of spider crabs gather to molt simultaneously for mutual protection.
- the crabs assemble in dense mounds nearly 100 meters long.
- stingrays are attracted to feed on newly molted, soft crabs during the gathering.
- the vast majority of crabs successfully escape and return to deep waters after molting.
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