![]() The deepest oceanic trench in the world is the Mariana Trench. The crew of the specialized deep-sea craft identified this remarkable spot in December of 1952. The Tonga Trench's lowest point is called the Horizon Deep, named for the research vessel Horizon from the Scripps Institution of Oceanography. ![]() It's the deepest trench in the Southern Hemisphere and is the locale of the fastest plate tectonic speed that's been measured. The second deepest place on Earth is the Tonga Trench, located in the south-west Pacific Ocean. This trench's deepest point is called the Galathea Depth and is 34,587 ft deep. The central part of the Philippine Trench is considered to be an active depression of the Earth’s crust. It is 820 mi long and 19 mi wide, starting at the Philippine island of Luzon and ending around the Indonesian island of Halmahera. The Philippine Trench is located east of the Philippines in the western North Pacific Ocean. ![]() The trench has steep, sloping sides that are, in some places, interrupted by series of steps or terraces. It extends about 1,800 mi and features a maximum depth of 34,587 ft. The trench was created by the same geological forces that formed the nearby Kuril island arc and the Kamchatka volcanic arc. It is situated off the southeast coast of the Kamchatka Peninsula in the Russian Far East. The fourth-deepest place is the Kuril–Kamchatka Trench in the northwest Pacific Ocean. Inexplicably, there's also a variety of pearlfish that lives in the Kermadec Trench, hanging out at a depth of 27,200 ft, which is about 20,000 ft deeper than any other pearlfish species. Several unique species live in the Kermadec Trench, including a giant amphipod that, at 13" long, is over ten times longer than typical amphipods.Ī fish species that's endemic to this trench, and the second-deepest fish, is the hadal snailfish. The trench is approximately 620 mi long, with its southern end located north-east of New Zealand's North Island. The Kermadec Trench is in the south Pacific Ocean and it's the fifth-deepest place in the world. What are we waiting for? Let's dive headfirst into this countdown of the five deepest places on Earth! 5. But the top five deepest places all exist in the Pacific. If we were looking into the top ten deepest spots, the Atlantic Ocean would come into play, since that's where the Puerto Rico Trench and the South Sandwich Trench are located. ![]() An oceanic trench marks the location where tectonic plates flexed, with one slab slipping under another to form a massive depression. Most are fairly narrow but can span many miles. Oceanic trenches are depressions in the sea floor. The very deepest spots, the oceanic trenches, have barely been explored by humans, and those will be our focus in this article. The fact is, these underwater features can be massive compared to their dry-land counterparts. We don't often think about it, but the ocean floor has geographical features just like those on land, such as valleys, plains, and mountains. Such giant troughs exist, and they are the deepest places on the planet. Imagine a gash in the Earth's surface that's deeper than Mount Everest is tall. ![]()
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