Scientists at China's Beihang University developed a tiny morphable robot to explore the ocean's depths — and it's now taken ...

It has legs for crawling, symmetrical tail fins for swimming, and folding pectoral ... at the Haima Cold Seep at 1,384 meters ...

While swimming, the robot generates thrust through its tail fin, reaching a maximum speed of 5.5 centimeters per second, and when crawling, it can move at 3 centimeters per second on sandy surfaces ...

We were amazed at this to-scale map we found on Tumblr depicting the Mariana Trench, the deepest part of the world's oceans. The trench is located in the Pacific Ocean near the Philippines.

Following is a transcript of the video. Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still be more than a kilometer ...

Scientists sampled fish living in the Pacific's Mariana Trench and trenches in the Indian Ocean. . | Credit: Han Xu et al. (2025) Evolution and genetic adaptation of fishes to the deep sea.

The first explorers visited the trench in 1960 on a brief expedition, after which there had been no missions until Hollywood director James Cameron made the first solo trip to the bottom in 2012.