---
title: "Peacock Mantis Shrimp (Odontodactylus scyllarus) | AnimalTracks.wiki"
description: "The brightly colored reef hunter whose club strike hits twice: once with the limb, then again with collapsing bubbles."
image: "https://animaltracks.wiki/images/animals/mantis-shrimp-1.webp"
published: "2026-08-30"
updated: "2026-09-29"
---
# Peacock Mantis Shrimp (*Odontodactylus scyllarus*)
> **Status**: Checked against 7 sources, listed under Sources below.
> **Tagline**: The brightly colored reef hunter whose club strike hits twice: once with the limb, then again with collapsing bubbles.
> **Soundtrack Vibe**: Balkan Brass & Romani Folk Riot // Goran Bregović, "Kalašnjikov"
> **Soundtrack Links**: [Spotify](https://open.spotify.com/track/6OlCJxmWri50RLA1CrBYZ6) | [YouTube](https://www.youtube.com/watch?v=UqOL7LOR6ko)
> **Vibe Match**: Brass blasts at a breakneck dance tempo, for a shrimp whose every shell-breaking strike hits twice, two force peaks typically less than half a millisecond apart: the club's impact, then the collapse of the cavitation bubbles it leaves behind.
## Biological Superpowers & Stats
- **Taxonomy**: *Odontodactylus scyllarus*
- **Danger Level**: Medium
- **Conservation Status**: Not Evaluated ([IUCN Red List](https://www.iucnredlist.org/))
- **Superpower**: A club strike that hits twice, and eyes that rotate to read polarized light
- **Habitat**: Indo-Pacific reefs, often in U-shaped burrows on sandy and gravelly ground near coral bases
- **Diet**: Gastropods, crustaceans and bivalves, with crabs the preferred prey
- **Tags**: crustacean, coral-reef, cavitation-strike, sensory-overload
## Natural History & Behavior
## A Jewel With a Hammer
The peacock mantis shrimp (*Odontodactylus scyllarus*) is very brightly colored. Its body is olive or green, its antenna scales are bright orange, and its smashing limbs are red. These shrimp average 3-18 cm in length.
It lives in the Indo-Pacific Ocean, south of Japan, north of Australia, and between eastern Africa and Guam. It is most commonly found in a U-shaped burrow, often built near the base of a coral reef on sandy and gravelly ground.
## One Strike, Two Hits
Researchers found that this species makes an extremely fast strike by storing energy in a saddle-shaped exoskeletal spring, then releasing it.
Each strike lands two blows. There are two force peaks, typically 390-480 microseconds apart (a microsecond is a millionth of a second). The first is the limb hitting. The second is the collapse of cavitation bubbles, which are vapor bubbles that form next to the prey when the appendage moves swiftly toward it.
Limb impact peaks between 400 and 1501 newtons. Despite its small size, this shrimp can generate impact forces thousands of times its body weight.
> **A club built for impacts** The club is hypermineralized, with minerals combined with a helicoidal chitin matrix. Together they give it several lines of defense against catastrophic failure during repeated high-energy impacts.
## Dinner and Duels
This shrimp is a carnivore. Prey includes gastropods, crustaceans and bivalves, and crabs are the preferred meal. It uses the club to break open shells. Kept in aquaria, it can break the glass.
It is known to be territorial. Individuals strike each other's tail areas, and the telson is the most heavily armored part of the body. It does not have many known predators, though it has been found in the stomachs of yellowfin tuna. In the burrow, it may use vibrations called stomatopod rumbles to warn off predators or others of its kind.
## Eyes That Roll
A photoreceptor is a light-sensing cell. Some mantis shrimp species have 12 different types, sampling wavelengths from deep ultraviolet to far red (300 to 720 nanometers). Some stomatopods can also detect circularly polarized light.
This species rotates its eyes to line up its photoreceptors with the angle of linearly polarized light, whose waves wiggle in one set direction. That maximizes the polarization contrast between an object and its background.
## Frequently Asked Questions
### Can a peacock mantis shrimp really break aquarium glass?
Animal Diversity Web says they are known to crack the glass of their tanks and are known to be aggressive to other animals kept with them. The web account also gives the punch's limb impact as 400 to 1501 newtons. *(Source: [Animal Diversity Web, University of Michigan]())*
### How does a bubble make the punch worse?
Cavitation forces peak at 504 newtons, and on average they reach about half of the limb's own impact force. In some strikes they exceed the limb impact by up to 280%. The authors suggest the two blows together fracture shells. *(Source: [Patek & Caldwell 2005]())*
### Do mantis shrimp really see 12 colors?
Some mantis shrimp species have 12 photoreceptor types. But when researchers tested how well stomatopods tell wavelengths apart, they did surprisingly poorly. Their experiments suggest a system that recognizes colors rather than comparing them finely. *(Source: [Thoen et al. 2014]())*
### How deep does a peacock mantis shrimp live?
Animal Diversity Web puts them at depths of 3-40 m, though they are most typically found at 10-30 m, in water of 22-28°C. *(Source: [Animal Diversity Web, University of Michigan]())*
## Sources
1. [Patek, Korff & Caldwell (2004). Deadly strike mechanism of a mantis shrimp. Nature.]()
2. [Patek & Caldwell (2005). Extreme impact and cavitation forces of a biological hammer: strike forces of the peacock mantis shrimp Odontodactylus scyllarus. Journal of Experimental Biology.]()
3. [Weaver et al. (2012). The Stomatopod Dactyl Club: A Formidable Damage-Tolerant Biological Hammer. Science.]()
4. [Thoen et al. (2014). A Different Form of Color Vision in Mantis Shrimp. Science.]()
5. [Chiou et al. (2008). Circular Polarization Vision in a Stomatopod Crustacean. Current Biology.]()
6. [Daly et al. (2016). Dynamic polarization vision in mantis shrimps. Nature Communications.]()
7. [Odontodactylus scyllarus. Animal Diversity Web, University of Michigan.]()
*Published August 30, 2026. Last updated September 29, 2026.*
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