The Producer's Story
Biologist Tom Iliffe studies the unique invertebrates found in blue holes. Because the ecosystem is isolated, animals have evolved here that live nowhere else on Earth. © Jill Heinerth/National Geographic Television
Biologist Tom Iliffe studies the unique invertebrates found in blue holes. Because the ecosystem is isolated, animals have evolved here that live nowhere else on Earth. © Jill Heinerth/National Geographic Television