Blackfish is the gripping story of Tillicum, a whale in captivity. The documentary examines the captivity of killer whales, and its dangers for both humans and whales. Tillicum died in January of 2017, after Sea World announced it would stop breeding orcas in captivity. Listen to this NPR story about the Sea World decision and hear more from the documentarian who made the film but once took her own kids to see the mamas at Sea World.