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Helicoradian

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Helicoradians
Helicoradian
Flora Information
Planet

Pandora

Na'vi Name

Loreyu - beautiful spiral

Taxonomy

Helicoradium spirale

Height

20-25 feet (6-8 meters)

Behind the scenes
First appearance

Avatar

The helicoradian (Na'vi name: loreyu meaning "beautiful spiral") is a zooplantae (part animal, part plant) possessing a single leaf that responds to touch by coiling up and retracting to the ground. Its neuromuscular system makes it difficult for xenobiologists to classify. Helicoradia can grow to 6-8 meters (20-26 feet) in height and 2.5 meters (8.2 feet) across.

Uses Edit

The Na'vi use leaves of the helicoradian for ornate ceremonial robes as well as other garments, tents, and sacks. Orange pigments in leaves can be extracted and used for paint.

Defense Mechanism Edit

The helicoradian is a type of "sensitive zooplantae" that responds to touch by coiling up so that the single large leaf is no longer exposed to any herbivores that would eat it. Because it grows in clusters, the touch response (possibly taxis) by one helicoradian often triggers the same response in others growing nearby so that the entire population recoils, one plant after another. This retraction is both defensive and an effective feeding mechanism to trap insects and small animals.

The Na'vi are able to wander among the helicoradian without triggering this defense response, but are warned of the presence of danger when the helicoradian starts to retract.

Commentary Edit

Helicoradians2
When Jake Sully (in his avatar body) touched several helicoradia, the entire cluster retreated. It may have been, however, that the cluster was responding to the presence of a group of herbivorous hammerhead titanothere (which charged Jake in a territorial display).

Background Edit

Helicoradia may have been based on Spirobranchus giganteus, which are small tube worms that can be found on the seas of Earth. These creatures do not only bear a resemblance, but also withdraw when disturbed.[1]

Trivia Edit

  • In the Avatar iOS/Android Game, helicoradia are used as a catapult for jumping.
  • The Pandorapedia entry in the NDS version suggests they may even be able to sense nearby movement, rather than just touch.

Source Edit

References Edit

  1. Wikipedia - Spirobranchus giganteus article
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