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Hyrotrioskjan's avatar

Halidraco carcharodon

You want big, nasty varanoids which could swallow helpless children in one piece and bring ships on the sea bed for fun... sorry monster hunters,  these animals are just freaking huge (nearly 11 m but normally 9 m) . Halidraco, the biggest reptile on earth and the biggest natrixosaur which still exists. These shy giants inhabit the northern Pacific- and Atlantic ocean where they are at the end of the food chain. There are two species, H. carachodon, which roam the Atlantic, and H. pazificus (guess where it live).
Halidrao is known for yearly migrations which follow the killer-, gray- and humpback whales at the edge of the arctic circle. Especially H. pazificus is known for this behavior which is very well studied by several authors. The follow the large mammals because they are not only predators but also scavengers. The Orcas come together at the entrance of the Bering sea where they hunt mainly calves of gray whales, sometimes also humpback whales, but because the often eat only a small part of the cadaver it's left enough for a few hungry bears, which waits at the beaches, and some sea serpents. 
The migrations of H. carcharodon are less well known, because there isn't a barrier like the Aleutian islands which would make it easy to watch them. We know that some animals migrate along the norwegian coast (do you know the Midgard Serpent?) but the rest...well, we don't know. Sometimes a few specimens are seen at the canadian coast (and inspired the Cadborosaurus myth) but this seems to be random encounters (and elks, seals, whales and trees in the water seems to be inspirations too).

Since the populations of right whales decreased extremely fish becomes a more and more important source of food for the sea serpents, pregnant females often follow the swarms of Atlantic herring, not only to hunt the fishes but also to catch some of the species which hunt the herrings. 
When returning from their summer quarters they stop in kelp forests to give birth to 2 babies. At the same time they have their yearly molting. This skin is much fatter and protein-rich than this of other species. The young sea serpents nibble it from the flanks of their mother, their first meal. After a few days or weeks they begin to hunt for themselves and the mother return to the ocean. But this is still the most distinctive form of parental care in natrixosaurs.

Edit: This is the last, still existing, Sea Serpent I can show you here, 7 species is all what is left of this family.

Other sae serpents:
extinct freshwater sea serpents:…

Edit 2: Soon all my sea serpent stuff will be exhibit at the Geomuseum Münster, a museum for paleontology and geology, the exhibition will have the title (translated) "Sea Serpents - worth protecting exotics from the realm of the legend", beside these pictures I will show work on toned paper and fossils of an young freshwater river serpent which died in the bronze age.

Edit 3: sketch which lead to this design:…
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© 2014 - 2022 Hyrotrioskjan
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Lediblock2's avatar
If you don't mind me asking, what were those extinct giant sea serpents? Will we see art of them sometime in the future?
Hyrotrioskjan's avatar
Not in the near future 
Lediblock2's avatar
I wonder, are there any sea serpents in the fossil record that were larger than this?
Eldertyrant682's avatar
TThese are probably dangerous 
I have to ask, are these fictional or real animals?

Otherwise, excelent work!
awww, my dreams are shattered
ZaubererbruderASP's avatar
Basiert der Name eigentlich auf "Halidracon", dem veralteten Namen für Plesiosaurier?
TheDubstepAddict's avatar
So sieht man sich wieder :lol:
ZaubererbruderASP's avatar
OMB ich werde gestalkt O.o
TheDubstepAddict's avatar

Da hatte Hyro wohl mal die selbe Idee wie ich mit Cetiosuchus ^^
ZaubererbruderASP's avatar
er hat ja noch einige Seeschlangen xD
Hyrotrioskjan's avatar
Das merkte ich erst später ;)
ZaubererbruderASP's avatar
Wie bist du dann auf den Namen gekommen?
Hyrotrioskjan's avatar
Lateinwörterbuch, ein wenig Altgrichisch und "Allgemeinwissen" ;)
ZaubererbruderASP's avatar
Achso, einfach selber gebastelt. Okay, dass krieg ich teilweise auch noch hin xD
Lediblock2's avatar
What do you mean, "Still exists"? Were there larger extinct forms?
Lediblock2's avatar
Sweet! Any examples in particular?
usoutlaw's avatar
i wonder does this beauty have that second set of teeth that the mosasaur family where known for?
Hyrotrioskjan's avatar
A few species have indeed a small set of palatal teeth.
grisador's avatar
A Very Magneficent and Great Species ! :)
Its really great to see this great species advanced (A form Of) Parental Care too....

Wait...LAST Sea-Serpent; Noo ! :(
This is probably among the most saddest lost of Animal Species on Earth ! 
Why the Best Animal Galleries are mostly forbidden to people? Some sort of Forbidden from 'Public Knowledge' ?
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