Posts tagged underwater
We currently have jet engine in flighter jet, space shuttle, some race cars but nothing underwater where breaking sound barrier(air) is concerned. I'm imagining in near future many manned electric ...
So we all know that the majority of sea creatures use fins that move either from side to side or up and down to propel themselves. But our boats don't do that. Our boats use propellers - a rotatio...
So, I have a question that focuses on a character from a show, Spongebob. Sandy Cheeks lives in a reverse aquarium under the sea in Bikini Bottom, in a dome that looks like this The Treedome is m...
One idea I've always wanted to try writing is the concept of vampires exploiting their lack of a need to breathe and generally low-maintenance biology to escape the brunt of the sun's rays by livin...
One of the points made in a number of recent questions regarding underwater races has prompted me to review one of my older pieces of world-building. Namely: the difficulty of producing common stru...
I read somewhere that the lowest depth for a sustainable underwater habitat is estimated to be three-hundred meters. Any lower and the pressure becomes too great for structures that are currently w...
Taking genetic manipulation of humans to change them to live in other environments, besides maybe gills what other physical changes would need to be done for a human to spend 95+% time living in th...
After circumstances make the shallow water in the oceans uninhabitable, great white sharks retreat to the deeper parts of the ocean, about 600 feet down (182 meters) to survive. The sharks can not ...
Following on from this question and assuming the race in question had developed the ability to create tools how would they approach the need for mass calculation. Our early computers were used to ...
Let's say there is a city, about the size of New York City, that is made only out of stone, steel, and glass. This city would be completely underwater. Assuming no humans are alive in this city, ho...
Let's say I'm an extremely rich and somewhat secretive research group who wants to carry out experiments and such away from the prying eyes of the public. One of the obvious ideas for the location ...
Anatomically speaking, could an aquatic mammal develop a horizontal fin that instead of being localized at the end of the tail extends up the sides in a similar manner to how an eel's fin extends u...
It is still a myth as far as our modern civilization is concerned, Atlantis located somewhere within the devil's triangle and it's inhabitants had struck down many planes and vessels daring to dist...
Imagine there is a micro-city built on the ocean floor in the pacific ocean covered with a durable dome with a 1 mile radius to keep water out. At this moment let us assume that the dome holds up b...
The Setting I'm doing background work on a story involving a civilization about as advanced as ours materiologically. A significant part of their military operates along the continental shelf zone...
In my Pathfinder RPG campaign setting I have two continents separated by an isthmus. An artificial canyon carved through the isthmus from one ocean to another divides the continents. The canyon i...
In a different question, someone mentioned "technology dichotomy", where they said "you can't invent time travel without first inventing the wheel". Then I read the question In a society of flying ...
This is a world with underwater merfolks and other humanoids. They have opposable thumbs, so they can use tools humans can use. Lets assume there's different subspecies and races of these merfolks,...
I'm trying to build a setting in which humankind would have no other choice than to live underwater to survive. Suppose there was a nuclear war in which a huge part of the human population died, ...
I am writing a DnD module where fishmen are invading island nations. The islands would naturally have adapted to this in some way as the raids have been happening for years. What method would these...
There have been more than a few questions covering Alcubiere warp drives, many about what happens with one at FTL and a few about using them at sub-light speeds. I'm curious about what happens at ...
Since fire doesn't burn under water aquatic alien sophonts will use alternative technologies. The question is, which alternatives to fire can they use? I am interested in all aspects of fire, (hea...
Is it possible for under water Atlanteans to make explosives? These Atlanteans have no magic but do have gills. They look like normal people other than the gills and webbed hands and feet. They...
Assuming the ocean is deep enough and not overcrowded is there any upper limits to the size a "sea monster" can grow? On land creatures are limited by gravity, they have to be able to generate the...
I am working on a scenario where a climate protection organization tries to breed sapient Cephalopoda as a help in their fight against climate change. The breeding goals of the evolving species are...
Defining what is a super intelligent civilization: An industrial civilization that invest on scientific progress and that builds and manipulates computers, robots and nano-machines, has effi...
In the answers to this question I learned that some cephalopods communicate via color: Some cephalopods are capable of rapid changes in skin color and pattern through nervous control of chromat...
I want to develop a water-dwelling, intelligent species that could ultimately reach space.1 My question here is about the biology of such creatures. I want my creatures to live in the water, not ...
In most representations of mermaid cities, they either live in implausible magical palaces, or in some more or less elaborate cave systems. Assuming the only difference with our world is the prese...
Water is different from air, and sound waves propagate through water in a different way than they do in air (caused in part by interactions with the bottom of the body of water). For a society livi...
These people inhabit an underwater city. In the city there are pools that connect the dry habitat with the outside ocean, this of course mean that the habitat is unpressurized and therefore the in...
When the earth is flung out of the solar system as per Josh Pirhi's question, not everyone embarks on a spaceship. Instead, as earth becomes a rogue planet, a group of survivors created a self sust...
My city's founders had the short-sightedness to place it on the coast. Now, for mysterious reasons, the sea level is rising. The municipal government has decided that building dikes is "too Dutch" ...
In my high fantasy medieval world, the ocean is populated by underwater fish people and land dominated by your good old human. Different type of fish people (shark, whale, turtle, shellfish, etc.) ...
So I was building my world with underwater civilizations and someone raised a question (see here) that I thought was interesting related to trade aspect: how would we have a standardized measuremen...
So I'm thinking about an underwater civilization and everything related to it, and I got to thinking about how they would communicate over extremely long distance. I knew that underwater species l...
I've been reading this question about agriculture for merfolk and more specifically the accepted answer. They mention the problem of food preservation only minutely. Now I'd like to pour that thoug...
I'd like my (very well funded) group of scientists to conduct an important excavation, in-situ with fully breathable air and comfort. I realize a pipe down to the surface would require a pump and ...
Consider a billionaire living on earth today. What would be the most effective way to deploy sensors to a vast area of the earth's sea depths? (Sea depths referring to the sea floor, and slightly a...
Is it possible for traffic lights to work underwater? Even for a short period of time. I understand that any electronics inside would short-circuit pretty quick. But could it be protected by the ac...
Could there ever be an incentive for a fish or other aquatic being to use simple tools, like early humans did? Would it be possible for any structure of a current water-dwelling being (for exampl...
I am imagining a water covered planet. There could be a few pieces of land scattered here and there, but >99% of the planet's surface is water. There are various ecosystems and biospheres where ...
Assuming we're talking about a world similar to ours with the difference of the existence of mermaids, that are fishes with an upper half visibly similar to a human's, live in the sea, can survive ...
In a fantasy world (a D&D setting, basically), how would an open underwater town populated by an assortment of mer-people deal with waste disposal? A few details: the town in question is a part...
It's a commonly known fact that whale song travels huge distances. In fact apparently before the oceans were so noisy they could communicate over 10,000km! However, whales are very big! They can c...
This is the follow-up question to How could an underwater civilization develop electricity?, as mentioned there. In that question, I never addressed how my civilization could have discovered/used ...
Suppose the mermaids share similar intelligent and technology with us, they also practise performing surgical operation like we do in hospital. Negate the issue of negligent during the operation th...
Im sure some are familiar with Bioshock's "Rapture City," a (somewhat) successful underwater city that was able to maintain stability and house an entire population. But, using current technology a...
So, I have an aquatic humanoid species that I want to be able to use echolocation. They are extremely similar to humans,with some minor differences, like gills. (The reason I include this tidbit is...
Building from this and this, given an aquatic civilization somehow manages to forge tools and build computers, could it build space-faring devices? Also another development that would come earlier...
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