Scientists are confused about the abdomen of this spider commonly found in Singapore.
It is shaped like a spider or preying mantis head, but the weird pulsating bits are what really baffle scientists.
https://twitter.com/MothershipSG/status/841205926065393664
According to National Geographic,
Scientists don’t know how the arachnid, in the genus Cyrtarachne, produces the internal movements, let alone what purpose it might serve.
Some theories suggest it's a defense mechanism to keep predators away. Others believe the pulsating attracts insects and other prey the spider likes to eat.
Rainer Foelix, author of the book Biology of Spiders states:
"People love to jump to conclusions what such a behavior is good for. Rather than to speculate, it would be better to study this phenomenon scientifically."
