I just finished watching this great 2 hour show called “Drain the ocean” by National Geographic and it was amazing. So much in fact, that I want to share with you, dear reader, some of what I learned today.
In a nutshell, the program demonstrates what the ocean floor terrain is like by using CGI animation. Great landscapes and features are unravelled as the ocean is drained. Here are some pictures, videos and some information all available at http://channel.nationalgeographic.com/episode/drain-the-ocean-3639/Overview#tab-Overview.
First of all, here is a short video where chimneys spewing super-hot water create a unique environment along the ocean floor. Here, countless giant tubeworms flourish.
In this video, off the island of Oahu, strange structures below the ocean’s surface may provide evidence of an explosion of colossal proportions.
The site features an interactive map where ocean landscapes are compared to land landscapes.
The Mid Oceanic Ridge, running along the centre of the ocean basins, is the planet’s longest mountain chain at more than 40,000 miles long.
The famous Miami Brickell Avenue skyline stretches to similar heights of those underwater coral mounds.
- Water covers more than three quarters of the globe.
- We know the surface of Mars or Venus better than Earth’s ocean floor.
- Only about 5% of the global ocean floor has been mapped in detail.
- Average ocean depths are approximately 2.2 miles, nearly 12,000 feet, deep.
- The mid ocean ridges of the world are so long they could go right around the Earth one and a half times.
- Overall, the diversity of the deep sea rivals that of rain forests on land.
- There are up to 100,000 underwater mud volcanoes on continental slopes and abyssal plains – formed by gas escaping from some underground source under high pressure.
- There are between 70,000 and 100,000 sea mounts more than half a mile tall in the world’s ocean and as many as one million features over 328 feet tall.
- The Mid Oceanic Ridge is the world’s longest mountain chain being more than 35,000 miles, running along the center of the ocean basins and joining up around the globe like the seams on a basketball.
- Iceland is one of the few places where you can stand on the Mid Atlantic ridge on dry land.