Is the Bermuda Triangle really a dangerous place?: and other questions about the ocean

Sharks can smell blood in ocean water from more than a mile away.
The moon controls the tides.
A mass of plastic as large as Texas is floating in the Pacific Ocean.
You may have heard these common sayings or beliefs before. But are they really true? Can they be proven through research? Let's investigate seventeen statements about the ocean and find out which ones are right, which ones are wrong, and which ones stump even the experts! Find out whether sea jellies have brains. Discover whether the world's oldest animals really live in the ocean. See if you can tell the difference between fact and fiction with Is That a Fact?