‘Blackfish’ Update: SeaWorld Looking Into “Treadmills” for Killer Whales

We’ve already heard about Blackfish’s impact on pop culture, with Pixar revising the plot of its Finding Nemo sequel, Finding Dory, in response to the documentary. Now a minor news item about SeaWorld’s research into “treadmills” for its orcas has me wondering if this too is an effect of the film, which negatively shines light on the theme park chain’s …