Science fiction thriller that pits man and woman against a giant octopus created after an H-bomb explosion.

When Dory, the forgetful blue tang, suddenly remembers she has a family who may be looking for her, she, Marlin, and Nemo take off on a life-changing quest to find them, with help from Hank, a cantankerous octopus; Bailey, a beluga whale who's convinced his biological sonar skills are on the fritz; and Destiny, a nearsighted whale shark! Dive into the movie overflowing with unforgettable characters, dazzling animation, and gallons of fun!

Host Neil deGrasse Tyson will tackle one of science's major challenges in each video, framed as a simple question that ordinary people wonder and worry about. Neil will guide us as he explores dramatic discoveries and the frontiers of research that connect each central, provocative mystery. Episode includes: 1) How Smart Are Dogs? - Meet an extraordinary boarder collie and other dogs changing our view of canine intelligence. 2) How Smart Are Dolphins?...