hmm I am guessing just sand.. lol

The City of Atlantis.

In other words, their is a slight chance of extinct creatures from say, 1.5 billion years ago, that could be deep down in the ocean. For example, some people said they think Megalodon's still exist. I don't think that's true, but I do think there is some type of large squid, such as the Kraken that might live at the main bottom of the ocean.

JCK wrote Well the ocean is bottomless because there is no sunlight down there it is pitch black for miles until you reach the core...

lol I dont know if you are being sarcastic or not.

SOG wrote

Narco wrote I'll assume you're thinking about Megalodons and things like the Kraken.
I doubt they exist, but they're possible.

As for lifeforms in general, I think we've only scratched the surface and there could be some very scary things waiting to be discovered.

Megalodons... that would be scary.

As for my opinion, I just think it's the same as the Ocean we know today, maybe less life the further you go down though.

I doubt a Megalodon would exist at the bottom of the ocean, Sharks aren't like fish, they need fresh air so thats why they live closer to the top.

Unicorns with six eyes and 3 legs they also have red ears and blue toungs and there favorite snack is Twinkies
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Problem?

Sand... Lots and lots of sand. DERP.

a rather large plug that will drain all the water on earth

a nuclear bomb!!!the military lost in 1958!the plane carring the bomb was a b-47 and crashed into a f-86 and to prevent the bomb from exploding they had to eject the 7,600 pound bomb off the atlanta beach if it would,ve blew up it wouldve killed hundred of thousans of people.!they never found it.

crabs at the bottom of the sea mate

(This is just my opinion) But I believe God created the ocean so deep and space so long and wide so that humans never get "bored" and constantly have something to do. This way humans can spend more time on focusing on space and the ocean and the wonders it brings and we won't have to worry about if "God is real" because He shows us every day that He is.

But again, my opinion.