Are there fossils under the ocean floor?
Are there fossils under the ocean floor? While most are skeletal, underwater examples can include teeth, skin, sponges, urchins and plant life. Underwater fossils are typically formed when sea organisms fall to the ocean floor and are covered in mud deposits. Over time, these build up to form limestone.
What did NASA find in the ocean cave?
Using an underwater robot, the science team overturned chunks of volcanic crust, discovering cave systems teeming with worms, snails, and chemosynthetic bacteria living in 75 degrees Fahrenheit (25 degrees Celsius) water, the institute said in a statement.
Has anyone been to the bottom of the Mariana Trench?
Nobody has walked on the bottom of the Mariana trench, but six people have descended to it in submersibles.