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Sept. 26, 2023 - Skeptoid
17:28
Skeptoid #903: Tracking California's Monster Salamander

Does a monster salamander the size of Asia's largest live undiscovered in the Pacific Northwest? Learn about your ad choices: dovetail.prx.org/ad-choices

Transcriber: nvidia/parakeet-tdt-0.6b-v2, sat-12l-sm, and large-v3-turbo
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Tracking California's Monster Salamander 00:07:22
Bigfoot is not the only cryptid said by some to inhabit the foggy forests of the Pacific Northwest.
Go deep enough into the woods, into the dark crevices where cold streams wind their way down toward the ocean.
Turn over a rock, and you might just find a salamander.
And then you might look up and see its granddaddy.
California's monster salamander is today on Skeptoid.
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I'm Brian Dunning from Skeptoid.com.
Tracking California's monster salamander.
Welcome to the show that separates fact from fiction, science from pseudoscience, real history from fake history, and helps us all make better life decisions by knowing what's real and what's not.
California's Trinity Alps are a mountain range in a part of the state barely even known to most of its residents.
Tucked in between the Cascades to the east and the redwood trees of the California coastal range to the west, they're where the climate transitions from coastal fog to the high alpine wilderness.
Hidden among its glaciers and granite are creeks, which flow down through fern-choked gullies and then to rivers lined with redwoods.
And some say that these creeks hide a rarely seen denizen.
They call it the California giant salamander, a beast many times the size of any others found in the state.
In fact, the size of an adult human.
Could it be that such a huge animal, known mainly from a few old stories, could be hiding in the streams right now, waiting to snap at the next larva to float past?
The more zoologically conversant among you are probably jumping up and down right now, tearing your hair and rending your garments, shouting, but California already has a giant salamander.
And you would be correct.
It is called, cunningly enough, the California giant salamander, Decamptodon ensatus.
It reaches a maximum size of about 30 centimeters, or one foot, and it has a couple of very close relatives, one of which is the coastal giant salamander, Decamptodon tenebrosus, which gets a tiny bit bigger.
It's one of only two salamanders in the world capable of vocalizing, and it sounds like this.
30 centimeters is a pretty fair size for a salamander, but it's nothing compared to the rumored examples of the Japanese giant salamander, Andreas japonicus, said by some to be found among northern California's redwoods and mountain streams.
These are five times larger, reaching 1.5 meters or 5 feet in length and crushing the scales at 25 kilograms, 55 pounds.
All have relatively flat bodies and broad diamond or shovel-shaped skulls.
Japan is at roughly the same latitude as Northern California, and both salamanders live in similar climates and conditions.
So there's really no reason that the Japanese giant salamander couldn't survive just fine in the Trinity Alps.
If there were a giant salamander in California, and by giant we're now talking Japanese giant size, it needn't even be individuals from that particular species.
Just as there are several close relatives of California's Decamptodonin satis, the Japanese giant has close relatives as well, both of which are even bigger, and they come from mainland China, Andreas davidianus and Andreas sligoi, this latter of which can reach 1.8 meters, or 6 feet.
Evidence for the existence of a Californian giant comes from that most reliable of all sources, yarn spinning miners from the days of the gold rush and subsequent decades.
Various cryptozoology authors have published chapters collecting a few of these tales.
And here are a couple summarized from Lauren Coleman and Jerome Clark's Cryptozoology A to Z. Frank L. Griffith was one of the first modern witnesses.
During the 1920s, Griffith was hunting deer near the head of the Trinity Alps New River.
At the bottom of a lake there, Griffith spotted five salamanders ranging five to nine feet long.
He caught one on a hook, but he could not pull it out of the river.
And another story.
Animal handler Vern Hardin of Pioneer, California, claimed he saw a dozen giant salamanders in a remote Trinity Alps lake called Hubbard Lake.
He managed to hook one, but had to release it because of a threatening snowstorm.
A quick measurement revealed, however, the giant salamander's length, an astonishing 8 feet 4 inches, or 2.5 meters.
I only found one newspaper article telling the story of a giant salamander sighting, and it was only the thinnest of second-hand anecdotes, told half a century after the fact, no less.
It was from a 1959 edition of a local paper, the Reading Record Searchlight and Courier-Free Press.
Mrs. Griffith said her husband, a Weaverville attorney who died in 1948, saw a big reptile which looked like, quote, a crocodile or alligator when he was fishing near Pony Butte in 1910.
She said he stumbled upon a cavemouth, went into the cave, and found what appeared to be a big well.
Griffith, she said, tossed his fishing line into the well and hooked the salamander, if that's what it was.
She said the reptile broke the line and her husband baited up some wire line and tossed it in.
Again, the salamander came to the surface.
This time it pulled the bait off the hook and then disappeared into the water.
The two Griffiths referenced in the two stories do not appear to have been related.
So we might ask how it could have been possible for some of the Asian giant salamanders to make it over across the Pacific Ocean into California, where they might well have taken root in the similar climate and flourished, perhaps eventually becoming their own subspecies.
Well, there are certainly examples of this happening in the far distant past.
Continental Breakup and Migration 00:07:45
Marsupials are one example.
Most marsupials are found in Australia, and most of the rest are in South America, with a few having spread to North America.
But hey, South America and Australia are nowhere near each other.
Well, this is because they were separated when the supercontinent Pangea split into Gondwana and Laurasia some 120 million years ago.
But prior to that split, they were adjacent territories on the same landmass.
Another example is a genus of trees called southern beeches, which were widely dispersed on Pangea and, since its breakup, are today also found in Australia and South America, in addition to New Zealand, New Guinea, and New Caledonia.
So it's perfectly reasonable to ask if this continental breakup could explain species of giant salamanders on opposite coasts of the Pacific Ocean.
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Alas, the answer is no.
California and Japan were on opposite coasts of Pangea.
Not much mingling of species.
It split up and the continents spread out to their current positions.
And today, the east coast of Asia and the west coast of North America are actually getting a tiny bit closer each year.
That independent development of the American and Asian salamanders in different parts of Pangea are why they are two different genera, Decamtodon and Andreas.
So if we were to find an Andreas species in North America, this likely means that it would have been artificially introduced, and probably pretty recently.
Crossing the Bering Land Bridge from Asia to America during one of the ice ages when sea levels were low enough to permit it is something worth looking at.
This did happen with a great number of species.
Mammals and megafauna crossed freely back and forth.
Humans crossed.
Lots of plants crossed, not only by spreading naturally, but by their seeds being carried by wind and animals.
But there were also plenty of living things that could not cross.
These included most tropical species of all kinds.
They were already permanently barred from getting to within thousands of kilometers of the land bridge's extremely high latitude.
It also included any species that required a specialized diet or a specialized habitat.
There's a reason we don't see giant salamanders lumbering through the deserts or on high rocky plateaus.
We might look in streams in those places or turn over some rocks and find them, but each species is adapted to a very specific habitat.
Many need to stay wet all the time.
The biggest giant ones are entirely aquatic, never coming out of the streams at all.
And lacking gills, they have to stay in fast-moving fresh water to get sufficient oxygen washing over their skin.
And while the habitats of Decamptodon insatus and Andreas japonicus are indeed nearly the same, getting from one to the Bering Land Bridge to the other would have required crossing many habitation zones that neither species could have survived in.
So if there ever were any Japanese giant salamanders in the Trinity Alps of California, the reason would have had to be that someone transported them there.
And because of the long travel times to cross the Pacific by wooden sailing ship and the Japonicus' unique needs for fast-flowing, highly oxygenated fresh water, it simply wasn't possible before modern times.
And there's little point in even speculating on this.
This did in fact happen on one occasion, at least according to cryptozoologist Carl Schucher, who wrote that in 1939, three specimens of Andreas dividianus were purchased from China, and one of them, a medium-sized individual named Benny, somehow escaped from the ship in the Sacramento River on its way to the port in Stockton.
Benny was apparently caught by a fisherman and was identified by a herpetologist from Chico State College named Dr. Thomas L. Rogers.
Finally, we have a few facts that, while they don't disprove the existence of Japonicus in California, they do make it even less likely.
One of these is the lack of any fossil evidence and any well-documented remains.
Another is that anytime we have a species of salamander, we find that it's in context with similar species in surrounding areas.
Decamptodon in California is surrounded by at least three other Decamptodon species in the western U.S., all in the same size range.
And Japan's Andreas has at least two and possibly as many as four other Andreas species in Eastern Asia, all big giganto guys.
Following this same natural distribution, if there were a species of Andreas in California, or even a new undiscovered genus of giant salamander, we'd expect to see a few other relatives in surrounding regions.
And of those, we don't even have any of the old anecdotal reports.
All this adds to the body of evidence, suggesting there probably isn't any such species.
And so we're going to leave this one in the file of, gee, it sure would be cool, but unfortunately, it just ain't so.
Hopefully someone will come in and drop an 18-inch shovel-shaped skull on my desk tomorrow.
But until they do, California's monster salamander will remain the stuff of dreams.
We continue in the ad-free and extended premium feed with another salamander that's the stuff of nightmares.
It's even bigger, in fact, four times bigger, weighing well over three tons.
Premium Feed Nightmares 00:02:16
And it's no fictional cryptid.
Where do we find it?
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