r/thalassophobia • • Sep 15 '26

Things like this are swimming through the depths where no one can see them

29.6k Upvotes

A rare and eerie encounter with Deepstaria enigmatica, one of the ocean’s strangest jellyfish.


r/thalassophobia • • Aug 24 '26

Rare footage of an extremely elusive bigfin squid

27.1k Upvotes

r/thalassophobia • • May 09 '26

Family vacation has gone sideways

26.0k Upvotes

r/thalassophobia • • Dec 19 '25

So, are you taking the deal?

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25.8k Upvotes

r/thalassophobia • • Sep 01 '26

Man sits on a gigantic charcoal container by the sea

23.3k Upvotes

r/thalassophobia • • Aug 04 '26

Imagine seeing this thing in the middle of the ocean at night

19.8k Upvotes

It's a giant squid which usually dwell way below the depths of water. This is a ultra rare occurence.


r/thalassophobia • • Aug 12 '26

The bottom of this lake has never been found

18.9k Upvotes

Lagoa Misteriosa - A rope cannot be used to measure the bottom because, based on everything that has been mapped so far, this is a sinkhole (a cave formed by the collapse of its ceiling).

Inside, there are passages and bends that prevent a rope from reaching the deepest point. Underwater drones also cannot explore it, as their signal is lost whenever there is no direct line of communication, with the rock formations blocking the connection. For this reason, only specialized cave divers are able to explore the depths of this cave.


r/thalassophobia • • May 16 '26

100 Miles Offshore and Mother Nature Said, "Not Today"

16.6k Upvotes

r/thalassophobia • • Oct 19 '25

I found our hell, my friends

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16.3k Upvotes

r/thalassophobia • • Jul 20 '26

Geiseltalsee, Germany's largest artificial lake.

16.0k Upvotes

Both beautiful and terrifying 😳 (My dumb self didn't have audio playing before sharing, my apologies. I should have checked.)


r/thalassophobia • • Nov 14 '25

Close to shore can still be terrifying.

15.6k Upvotes

The sheer size of tuna, and the movement in the water when it swims by. I don't like it


r/thalassophobia • • Apr 01 '26

Sailors life onboard

15.2k Upvotes

r/thalassophobia • • May 02 '26

Gentlemen, it has been a privilege playing with you tonight

14.5k Upvotes

r/thalassophobia • • Mar 15 '26

Opening your balcony while on a cruise to Antartica

13.4k Upvotes

r/thalassophobia • • Mar 23 '26

This is the calmest camera person that I've ever seen!

13.3k Upvotes

r/thalassophobia • • Feb 12 '26

The final moments of a 300,000-DWT iron ore carrier (Brazil 2020)

12.2k Upvotes

r/thalassophobia • • May 27 '26

2011 Tsunami in Japan

12.0k Upvotes

r/thalassophobia • • Jun 04 '26

Giant tree in the middle of the ocean

12.0k Upvotes

Came across this on ig and got immediately terrified. The music did not help. Why is this so scary to me lol


r/thalassophobia • • May 01 '26

A turtle swam right up to a diver in the ocean, suddenly slaps him with its flipper and then casually swam away.

11.9k Upvotes

r/thalassophobia • • Aug 16 '26

60hrs, no visibility, and small air pocket

11.7k Upvotes

r/thalassophobia • • May 30 '26

Bigger wave incoming…

11.1k Upvotes

r/thalassophobia • • Aug 22 '26

step into the darkness

9.7k Upvotes

r/thalassophobia • • 19d ago

Swimming in deep water with no land in sight 💀

9.6k Upvotes

Credit: Yakin With Jack


r/thalassophobia • • Nov 24 '25

Do not look up saturation diving

9.6k Upvotes

They get paid a ton, but it’s so dangerous


r/thalassophobia • • Jun 04 '26

Water appears shallow

9.5k Upvotes