u/123Thundernugget

Sketches and doodles in the second and third images. I mostly used her SynthV design for the design but then I forgot her headphones are part of the utau design.

Display feathers for the male and fat reserves on the female.

https://www.twitch.tv/aivtuber_ikuta

https://www.twitch.tv/milk19873

Here is the flavor text from when I posted on r/SpeculativeEvolution to be all factual and grounded:

The Gargantuan Leviathan of 4546B is a huge extinct creature. Today only its massive bones can be found.

New data scans show quite a different lifestyle than the initial assessment.

The creature was a slow moving but ravenous omnivore, with different food preferences at different stages of its life, but always with enough opportunism to fuel its gargantuan metabolism. It spent most of its adult life as a benthic creature. Fully grown Gargantuans are too heavy to swim for extended periods of time. Instead, most locomotion consisted of half-slithering and half-punting itself across the seafloor. At this large of a size, extracting oxygen from the water becomes inefficient. To compensate, the Gargantuan has extensive gills and a high blood pressure, as well structures of “accessory gills” along the sides of its body, which were wrinkled patches of vascularized skin which can be retracted under scales during times of movement to not impede hydrodynamics. While the fully grown creature was an opportunistic omnivore, most of its time feeding was spent eating animals buried in the sand and mud. These consisted of shellfish and worms as well an meiofauna, as well as any bottom-dwelling fish not fast enough to escape. To feed, the creature simply scoops up huge mouthfuls of mud and sand, and vomits up water to trap any creatures against the baleen-like hair on the roof of its mouth. Small creatures get caught in its extensive gill rakers as well.

However, these creatures hatch from their eggs with a much more active and predatory lifestyle. Over the years they will slowly shift to a more herbivorous diet. After that, they will shift their diets to incorporate more benthic organisms, before shifting into the more indiscriminate feeding methods of their final stages. Most individuals of a given population would never reach these sizes and stages of their life.

It seems the habitats these creatures needed, large and relatively shallow tracts of vegetated or barren sand, are no longer common on 4546B, and the burrowing shellfish which made a up a large portion of its diet have gone extinct. The creature itself seems to have gone extinct millions of years before the Kharaa, possibly due to changing climate or habitat.

Would this creature have been alive today, it may pose minimal direct danger to a human diver, granted they stay out of its way of its mouth. However, it could pose a huge danger to any artificial structures erected within its territory, as it may get curious and start chewing on them, or simply knock them over since they were in its way. It is unknown whether the Architects had clones any specimens from the DNA samples they had in storage.

The Gargantuan Leviathan of 4546B is a huge extinct creature. Today only its massive bones can be found.

New data scans show quite a different lifestyle than the initial assessment.

The creature was a slow moving but ravenous omnivore, with different food preferences at different stages of its life, but always with enough opportunism to fuel its gargantuan metabolism. It spent most of its adult life as a benthic creature. Fully grown Gargantuans are too heavy to swim for extended periods of time. Instead, most locomotion consisted of half-slithering and half-punting itself across the seafloor. At this large of a size, extracting oxygen from the water becomes inefficient. To compensate, the Gargantuan has extensive gills and a high blood pressure, as well structures of “accessory gills” along the sides of its body, which were wrinkled patches of vascularized skin which can be retracted under scales during times of movement to not impede hydrodynamics. While the fully grown creature was an opportunistic omnivore, most of its time feeding was spent eating animals buried in the sand and mud. These consisted of shellfish and worms as well an meiofauna, as well as any bottom-dwelling fish not fast enough to escape. To feed, the creature simply scoops up huge mouthfuls of mud and sand, and vomits up water to trap any creatures against the baleen-like hair on the roof of its mouth. Small creatures get caught in its extensive gill rakers as well.

However, these creatures hatch from their eggs with a much more active and predatory lifestyle. Over the years they will slowly shift to a more herbivorous diet. After that, they will shift their diets to incorporate more benthic organisms, before shifting into the more indiscriminate feeding methods of their final stages. Most individuals of a given population would never reach these sizes and stages of their life.

It seems the habitats these creatures needed, large and relatively shallow tracts of vegetated or barren sand, are no longer common on 4546B, and the burrowing shellfish which made a up a large portion of its diet have gone extinct. The creature itself seems to have gone extinct millions of years before the Kharaa, possibly due to changing climate or habitat.

Would this creature have been alive today, it may pose minimal direct danger to a human diver, granted they stay out of its way of its mouth. However, it could pose a huge danger to any artificial structures erected within its territory.