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Onironus — Bladder-crab

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Published: 2019-09-09 23:27:21 +0000 UTC; Views: 4040; Favourites: 60; Downloads: 0
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Description

Specimen CGAN 01/319

 

Along with being at the mercy of even the slightest breeze, buoyant organisms are put under even more duress in EL-1b's 15.2 bar atmosphere.  Though this allows for a greater lift force with a moderately small hydrogen bladder, it also means that drag force is greater and the slightest of breezes are gusts.  To combat this, "Bladder-crabs" have adopted a primarily autotrophic lifestyle, using their bladders more for height advantage in the high gravity than for flight.  Their four thin wings allow for some maneuverability in the constant air currents but only rarely is the organism not tethered to some kind of surface by its long, extensible legs, its reach further lengthened by a telescopic waist.  Much of its time is spent attached to a host, usually a Lichen-coral, where it establishes a mutualistic exchange of photosynthetic energy products for water and other nutrients, all ferried up the legs by a combination of negative pressure and peristalsis.  Bladder-crabs and their relatives are amongst the most symmetrical organisms on EL-1b, a necessity for balance during flight.

 

I wasn't sure about this one for the longest time this week.  Lighter-than-air organisms are a staple of specbio but come with a host of evolutionary hurdles.  I think I came up with a way around most of them but I'm still not sure if these guys will stay canon.  The biggest issue I still have is the high air pressure buffeting these guys around.  I suppose they could band together and adopt a lifestyle similar to kelp forests, sheltering around "coastlines" of Lichen-corals and other tall structures.  Hmm.  Not sure yet.

 

As always, thank you all for your interest! 

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Comments: 5

Vumpalouska [2020-01-19 02:39:55 +0000 UTC]

These guys should stay canon by the merit of sheer awesomeness!

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Rodlox [2019-11-02 04:34:34 +0000 UTC]

as i understand it, the primary hurdles to floaters are 
a.  atmospheric density  (which you addressed)
b.  whether or not the young have a flotation device which works  (i would imagine the Bladder Crabs young cling to lichen until their bladders are big enough...and-or the young primarily use their wings)

regardless of any of that, I like this species a lot

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Onironus In reply to Rodlox [2019-11-02 12:47:15 +0000 UTC]

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Axel-Astro-Art [2019-09-10 21:58:07 +0000 UTC]

I really like this design it looks so familiar, yet absolutely alien at the same time. The balloon looks so organic, very natural. 
Will you draw more creatures from the same biosphere? Sounds like an interesting planet. 

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Onironus In reply to Axel-Astro-Art [2019-09-11 04:08:51 +0000 UTC]

Thank you!

All of these organisms are from the same biosphere inhabiting an ongoing project of mine which will get off the ground hopefully in the next little while.  I am trying to keep my productivity up by releasing an illustration related to the project every Monday so there will be more to come.

Thanks for your interest!

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