Sunday, 6 December 2015

Cuttlefish Uses Clever Strategy to Evade Sharks

A cuttlefish (Sepia officinalis). Image courtesy of Hans Hillewaert, Creative Commons (CC BY-SA 4.0).

Joel Kontinen

Cuttlefish stop breathing when a shark approaches them. This basically makes them invisible.

A paper published in the Proceedings of the Royal Society B shows that predators were very unlikely to detect cuttlefish that held their breath. An article in Science states:

When the frightened creatures froze in place and covered the cavity leading to the gills with their tentacles, the voltage in the water nearby dropped by about 80%.”

This made it very difficult for sharks to find them.

Animal intelligence should remind us that the One who made them was not a blind watchmaker but the Almighty Creator who planned every small detail.

Other examples of animal intelligence or amazing skills include the following:

- Darwin’s finches make their own insect repellent.

- Bowerbirds can mimic practically anything.

- The octopus is an “eight-legged marvel."


Perkins. Sid. 2015. When cuttlefish hold their breath, they become nearly invisible to sharks. Science (1 December).