Ancient Discoveries Made Deep In The Ocean

A lost world under the North Sea where human bones and mammoth remains still come up in fishing nets, pirate cities swallowed in minutes, ghost ships frozen in the deep, and temples the ocean only revealed for a few moments before covering them again. These are ancient discoveries made deep in the ocean. Between what's now Britain and mainland Europe, there used to be a huge stretch of dry land called Dodgerland. Today it's under the North Sea, but back then it was a place with rivers, wetlands, and hunting grounds, not just a muddy strip of coast. As the Ice Age ended, sea levels slowly rose and swallowed more and more of it until only the highest areas were left. One major event in that story was a massive underwater landslide off Norway that sent this huge wave crashing into the area. That wave probably wiped out some of the last low-lying parts people could actually live on. Now it's all under dozens of meters of water, and the only reason we know it was once a busy landscape is because modern fishing boats keep dragging up bits of it. They've pulled up mammoth bones, antler tools, and even human remains from the seafloor. There are also traces of what people there were actually doing with material. So for example, they used a kind of sticky black glue made from tree bark, which they would have heated in a very specific way to get it just right. It wasn't something that just happened by accident. In the waters south of China, there are two shipwrecks sitting so deep that no human diver will ever reach them. We've only gotten a look at the ships through remotely operated submersibles. They date back to China's Ming Dynasty, about 500 years ago, and they're resting around a mile down on the ocean floor. What makes them so interesting is that they seem to show both directions of a trade route at the same time. The first ship was loaded with blue and white bowls and jars made of porcelain. They're stacked in these neat layers. Because it's so cold and dark down there, they're in surprisingly good condition. The second ship, about a dozen miles away, looks like it was on the opposite journey. It was carrying huge wooden logs, the kind of strong, dense woods that would be used for building ships or large buildings back in China. So you've got one ship carrying Chinese products outward and another bringing raw materials in. Pretty interesting up-close look at how their trade network operated. On the northwest coast of France, out in the Atlantic, there's a small island called Ile de Seine. Just off that island, on the seafloor, divers found something that doesn't look like ordinary rock. It's a long line of big granite stones, stretching about the length of a football field. Some of the blocks are standing upright. Today, that whole thing is underwater, but when it was built, the sea level was much lower. Back then, this would have been on or near dry land. People had to move and arrange these heavy stones by hand. They clearly didn't fall into place naturally. It lines up with other ancient stone sites in that part of France, where you see rows of standing stones and big stone structures on land. The exact purpose of this underwater wall isn't totally clear. It might have marked a boundary, been part of some larger structure, or had some kind of ritual meaning. What we can say is that people thousands of years ago were willing to organize big groups, move all these stones, and reshape their coastline. Over time, with rising seas and the changing shoreline, the place was just swallowed by the ocean, leaving this strange man-made line of stones resting under the waves. In Central Asia, high up in the mountains of Kyrgyzstan, there's a huge lake called Issyk-Kul. Even though it sits in this cold, snowy area, the lake actually doesn't freeze, and under it, especially near the shore, there are signs of old settlements that used to sit right on the edge. Over time, earthquakes changed the shape of the coastline. Some parts of those old towns ended up below the waterline. Divers and survey teams have found foundations of buildings and burial areas, and the artifacts they pulled from the lake seem to come from different cultures. Stuff that would have probably come from traders passing through with goods. And that's because Issyk-Kul sat along routes that connected China, the Middle East, and Europe. So it makes sense that towns here were busy stopping points. On the southeast coast of India, there's a town called the Mahabali Puram, known for its ancient stone temples right by the sea. There have always been stories that there were more grand temples along that shoreline, but that most of them were swallowed by the ocean over time. For a long while, that sounded more like legend than proven history. But in 2004, a massive earthquake in the Indian Ocean set off a tsunami. Just before the waves hit the coast, the water briefly rushed away from the beach, exposing parts of the seafloor that nobody normally sees. People reported seeing lines of stone and what looked like carved shapes out where the water usually is. After the disaster, once it was possible to go back safely, teams went out to look more closely. Under a few meters of water not far from shore, they found walls, carved blocks, and statues that match the style of the surviving temple on land. Some stones clearly belonged to pillars or decorated parts of old buildings. The picture that's formed is that Mahabali Puram used to have a larger complex of temples and buildings along a coastline that's changed a lot over hundreds and hundreds of years. Off the southern coast of Jamaica, at the entrance to what's now Kingston Harbor, there used to be a town called Port Royal that was infamous in the 1600s. It was crowded with sailors, merchants, and most infamously, pirates. People called it one of the most sinful places in the Caribbean. The town sat on this narrow strip of sandy land, packed with wooden houses, brick buildings, and taverns. On June 7th, 1692, a powerful earthquake hit. Because the town was built on this loose, waterlogged sand, the ground gave way, and whole streets split apart and large chunks of the town slid straight into the harbor. It happened so quickly that a lot of it ended up on the seafloor almost fully intact. Around 2,000 people died in minutes, though. Today, parts of old Port Royal are still underwater in relatively shallow, calm water, so you can go down there and see it. Divers have found some pretty incredible things down there, too. Outlines of streets, rooms with objects still in place, a pocket watch stopped near the moment of the quake is one of the more famous finds. On the west coast of India, in a big bay called the Gulf of Kumbhat, researchers with the National Institute of Ocean Technology ran a survey to study the seafloor. In December of 2000, their equipment picked up patterns that didn't look purely random. Some lines and shapes seemed straight and grid-like, which led a few people to wonder if they were seeing the remains of some ancient town. A few objects, like a piece of old wood and some fragments of material, were pulled up during the work. One date from that wood came back extremely old, 7500 BCE to be exact, so if those patterns really were the remains of buildings and streets, and the date was accurate, it would mean people were building large, organized communities in this area far earlier than most historians thought. But this stretch of sea is a tough place to study. Water is muddy, the currents are very intense, and the seafloor is constantly being stirred up. That makes it easy for natural ridges and ripples to look like straight lines on a scan, and for old objects to move far from where they originally came from. Some argue that there just isn't enough clear proof yet to say this was a city, and that the patterns might just be natural. So this spot is better thought of as a mystery, but a cool one at that. North of Turkey and east of the Balkans, there's a big inland sea called the Black Sea. It has a feature. Once you go deep enough, the water doesn't have much oxygen in it. That might sound like a small detail, but it makes a huge difference for shipwrecks. The usual creatures that chew up wood can't live down there, so ships that sink to those depths can stay in much better shape than normal. In recent years, teams using robotic submarines found dozens of wrecks on the Black Sea floor. One of the most incredible is an ancient Greek trading ship, around 2400 years old, sitting upright about two kilometers down. The mast is still standing, the shape of the hull is clear, and parts of the deck layout are still visible. Before this, historians mostly had to rely on pictures painted on pottery and a few broken remains to figure out how these ships were built. They also found later ships from Roman times and the Middle Ages, many of them with cargo and details still in place. Coiled ropes, carved decorations, and piles of jars and containers preserved in the mud. Instead of being torn apart by waves and sea life, these ships ended up becoming more like underwater museums. On Mexico's Yucatan Peninsula, there are thousands of water filled sinkholes and caves known as cenotes. To the ancient Maya people who lived there, these weren't just natural pools, they were seen as entrances to the underworld and places where important rituals happened. Some of them connected into long underwater cave systems. In one of those systems, divers found the skeleton of a girl who lived about 13,000 years ago. Bones were discovered alongside the bones of ancient animals, some that are now extinct. Back when she died, these caves weren't underwater yet. People and animals could walk into the mud-dry ground. Later, rising water filled the caves and helped protect what was inside. Much later, the Maya started using these same places for their ceremonies. Deep in the dark sections of some cenotes and caves, researchers have found pottery, incense burners, stone platforms, and human remains. Many of these seem to be offerings connected to rain and water gods.