Humpback whales weave real fishing nets from terror, pushing prey into a tight ball. Thus they surround a school of fish or krill, prevent it from dispersing, and then rush up to look for food. From the outside it looks like a Fibonacci spiral drawn right in the ocean.

Humpback whales weave real fishing nets from terror, pushing prey into a tight ball. Thus they surround a school of fish or krill, prevent it from dispersing, and then rush up to look for food. From the outside it looks like a Fibonacci spiral drawn right in the ocean.