What is under the ocean floor?
What is under the ocean floor? Leading into the ocean there are continental slopes, made up of granite, and sedimentary rocks that have been formed by pressure applied to sediment. Deeper in the ocean, the floor (beneath sand and sediment) is made up almost completely of mafic oceanic crust, mainly basalt and gabbro.
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.