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Embark on an exhilarating journey to find the planet's most fascinating fish on HOOKED! Dedicated scientists and passionate enthusiasts take on extreme fishing adventures, uncovering unique species. Trekking through the planet's rivers, lakes and oceans, examine the extreme challenges of a changing environment. As each compelling episode brings you face to face with some of nature's most marvelous creatures, discover what's being done to understand and protect them.