We know less about our oceans than we know about the moon. Why? It's harder to explore the depths of the ocean because of the technical difficulties associated with it. However, scientists at the California Academy of Sciences have designed a portable decompression chamber in order to bring a part of that mystery safely aboveground in order for studying -- fish. This opens many doors for the future of studying the ocean's twilight zone. 

This video is part of our Engineering Is: Bringing Fish Up from the Deep e-book. The e-book explores the science and engineering principles behind the California Academy of Sciences’ portable decompression chamber, and includes videos, interactives and media making opportunities. Find our other e-books at kqed.org/ebooks.