Here’s what I learned at the end of my first week at Sealab! First, there is a nocturnal snail called a moon snail. Secondly, Richard E. Byrd stayed by himself in Antarctica for four months! Lastly, the layer of Earth beneath the crust is the mantle. It’s only 2-3 miles under the ocean, but 25 miles below land! I can’t wait for next week!