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Irridalli by Abiogenisis Irridalli by Abiogenisis

The Irridalli are a successful group of medium-sized predators stalking the upper levels of Chriirah’s tropical oceans. Like many mobile quadrilaterians, evolution has optimised their four-sided body plan into a sleek, secondarily bilaterally symmetrical shape able to move swiftly and efficiently through the ocean.

Possessing some social intelligence, Irridalli travel in loose pods to locate swarms of suitable food, at which time they separate and attempt to drive the prey nearer the surface, thus rendering them easier to capture. Despite this initial co-operation, the actual hunt itself is performed independently of the other pod members, cooperation only resuming when prey needs to be driven towards the surface once again.

While Irridalli are quite fast, many prey species are considerably faster and swimming speed is not their primary weapon: Moving in behind prey, the large eyes fix on a target and when in range two tentacles launch outwards as an elongated and lethally barbed lower jaw attempts to impale it. If the strike is successful, the tentacles rapidly coil around the doomed creature and draw it towards the mouth.

Like most apex predators, the Irridalli suffered major population depletion in the period leading up to, and during, the fall of birrin civilisation. As the birrin recovered, so too Irridalli populations increased in parts of their former ranges as prey species returned. The loss of genetic diversity however has resulted in higher than expected parasite loads in some pods.

Once hunted by the birrin as food, they are now rarely eaten both because they are widely protected, and are so infused with accumulated industrial poisons they are mildly toxic to ingest.

 

 

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:iconkinsarda7:
Kinsarda7 Featured By Owner 4 days ago  New member
Love your work! The Birrin and their home world fascinate me! Just wondering, what organism would you compare this to on Earth? Kinda reminded me if Dolphins. Even the way you used "pod".
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:icondinobrian47:
DinoBrian47 Featured By Owner Dec 3, 2014  Hobbyist Traditional Artist
How large would this species be?
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:iconabiogenisis:
Abiogenisis Featured By Owner Dec 9, 2014
Humboldt squid sort of size.
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:icondinobrian47:
DinoBrian47 Featured By Owner Dec 10, 2014  Hobbyist Traditional Artist
So at least 3 meters long?
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:iconhelixdude:
Helixdude Featured By Owner Nov 18, 2014
So apparently Birrin civilisation has collapsed at least once in the past, tell me more about that.
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:iconabiogenisis:
Abiogenisis Featured By Owner Nov 28, 2014
The most recent major one was a global warming/resource scarcity induced nuclear war and ecosystem collapse.
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:iconquarkster:
Quarkster Featured By Owner Dec 1, 2014
And this was prior to contact with humanity?

When are you publishing a book for me to buy?
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:iconabiogenisis:
Abiogenisis Featured By Owner Dec 9, 2014
2016 maybe? :P
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:iconabiogenisis:
Abiogenisis Featured By Owner Dec 9, 2014
Hmm maybe 2016 or something?
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:iconworldbuildersinc:
WorldBuildersInc Featured By Owner Nov 4, 2014  New member Student Traditional Artist
Your work is so cool! I'm an aspiring science-fiction author/artist, and I really look up to these creations to inspire my own. I have decided to embark on a world-build expedition more thorough than I have before. No offense, but a watch would be appreciated!
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