3. Pharaoh cuttlefish change their appearance and behavior to mimic hermit crabs in...

Pharaoh cuttlefish change their appearance and behavior to mimic hermit crabs in order to inconspicuously approach their prey and/or protect themselves against predators.

National Geographic's news article Cuttlefish Pretend to be Crabs to Catch More Fish.

Journal article with several supplementary videos.

Abstract:

Cephalopods are able to control their arms sophisticatedly and use them for various behaviors, such as camouflage, startling predators and hunting prey. Here, we report a previously undescribed arm-flapping behavior of the pharaoh cuttlefish, Sepia pharaonis, observed in captivity. S. pharaonis raised the first pair of arms and wrinkled the parts near the distal end, where the skin color was darkened. Additionally, S. pharaonis spread the second and third pairs of arms and bent them as if they were jointed, and flapped the distal ends. S. pharaonis showed this behavior in two different situations: after being introduced into a large space, and during hunting. We discuss the putative functions of this behavior, including possible mimicry of a hermit crab, considering the situations in which the behavior was observed.

/r/Awwducational Thread Link - video.nationalgeographic.com
Previous
Next

Recently removed from /r/Awwducational

Cats place their hind paws in exactly the same spot as their front paws when walking to allow them to make precise movements Waitomo Glowworm Caves - New Zealand Science of COVID and Why We Wear Masks! Educational Song for Kids Scientists have already observed that rats will voluntarily share food with other rats who are hungry. A new study now suggests that they do so not just based on what the other rat does, but also on how it smells. This stunningly iridescent and rainbow-like member of the pheasant family, the Himalayan monal, is the national bird of Nepal Cows sense the Earth's magnetic field and use it to line up their bodies so they face either north or south when grazing or resting, but nobody is sure why. Leopards often haul their kill up to a tree to keep it safe from scavengers The Maned Wolf has urine that smells similar to cannabis. Subordinate female meerkats who try to breed often lose their offspring to infanticide by the dominant female or are evicted from the group. They then can become wet-nurses for the dominant female, or get evicted from the colony. The Galapagos fur seal spends more time out of the water than almost any other seal. On average, 70% of their time is spent on land. Most seal species spend 50% of their time on land and 50% in the water.

More Random Comments

[WTS/WTT] send it Sunday - Mathews V3 31 W or L take? i might’ve accidentally gotten my ex kicked out of school Wiimote pairing issues ONLY when using the Metal backend?!?! Let me guess what Rey's new films will be about Does every woman over 30's feel such attraction? Hooray for ugly quilts! [WTS] Leupold Deltapoint Pro 2.5 MOA and ADM QD Picatinny Mount $75-325 classicrocker883's Marlin-HC32 bltouch AITA for parking in a pregnant person/ veteran spot 迪蛆们少玩网多看书 Three questions for you: Please, for the love of God, am I the asshole?? I told her this morning that I wasn’t going. I’m 17, not an adult, btw. Chelsea feeding Kwame the strawberry after he said no is giving me Kevin Malone being force-fed broccoli vibes. Daily Discussion