What is the likelihood that there are massive sea creatures dormant in the unexplored depths of our oceans, such as in the Mariana Trench?
I've always been fascinated by the concept of things like sea serpents, leviathans, and the like. Aquatic cryptozoology.
This, there's nothing to eat
Sadly, all of the supposed "giant sea monsters" that have been sighted over the centuries are likely to be nothing more than rather mundane submersible robots built by aliens
I share the same curiosity as you OP, but
>>2406216 kinda says what I've come to believe more over the years. (Limited food supply) that it'd be highly unlikely that something of such massive size could sustain living at those depths for extended periods of time. Also from most documentaries I've seen it seems the farther down you go, the organisms living down there become smaller and smaller with all of the pressure being at those depths.
Its really unlikely that there's anything particularly different from animals we already know about.
There's definitely some weird squid or starfish no one has seen yet, but nothing like what most people fantasize about.
Was there a bunch of food back then? What were the oceans like?
Carcharocles megalodon lived in the relative
shallows praying on the large mammals of the surface water there not enough game in the deep to sustain such a large shark
For a large active shark yes much more food 3 times the amount of baleen whales we have today but all smaller only between 20-60feet long as well as numerous species of Sirenians sea turtles and tons of toothed whales
Whales can dive pretty deep, it was not until recently we discovered that giant squids feeding on spermwhales( I think?) exists.
Who knows what might have existed, no one is going to look for fossile at depth of 4000 meters.
is that true? if I become a millionaire with an infinite supply of canned tuna can I create a deinosuchus in my back yard?
There are creatures like that, but not remotely what you're thinking of.
I can't believe the blue whale, the largest animal to EVER exist, is still around and people are still not satisfied. Do people don't think they're cool enough because they're filter feeders?
It's only human to want ridiculous myths. Even when we didn't have the tech to make us all that safe from things like bears and lions we were still making up monster stories because the real monsters weren't scary enough.