S1 E26 7/23/18

Tiger Shark Invasion

An invasive species is turning one of the world's oldest marine ecosystems upside down. Dr. Neil Hammerschlag leads a team that includes cameraman Joe Romeiro and local expert Alex Hearn to the Galapagos to observe and document how tiger sharks have reset the underwater order in one of the shakiest place on the planet in the last 10 years.

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