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Hi! I'm Adriana Aquino , an Ichthyologist. Ever wonder why fish can breathe underwater but we can't? Living in water and living on land are very different. Ocean creatures have special features that let them breathe , eat , communicate , and move in water.

Find out about the things, or properties, that make water special—its density and the amount of food, oxygen, and light available. Discover how marine life survives there.


Play "Journey to the Bottom of the Sea."
Can you make it all the way to the ocean floor?


This FLASH interactive is temporarily unavailable. Please stay tuned for a new version as we work to rebuild it. 

Image Credits:

Photos: Adriana Aquino: courtesy of AMNH, Denis Finnin; Illustations: Jim Paillot