An anonymous reader writes: Amusement park operator SeaWorld Entertainment announced on Thursday that it is ending its orca breeding program. The announcement comes amid growing pressure from activists who found that whales and their trainers weren't treated properly. A 2013 documentary Blackfish cited a number of violent incidents at the amusement park. In an op-ed Joel Manby, President and CEO of SeaWorld Parks and Entertainment laid bare the details on why his company is shutting down the orca breeding program. "Customers visit our marine parks, in part, to watch orcas. But a growing number of people don't think orcas belong in human care. [...] Now we need to respond to the attitudinal change that we helped to create -- which is why SeaWorld is announcing several historic changes. This year we will end all orca breeding programs -- and because SeaWorld hasn't collected an orca from the wild in almost four decades, this will be the last generation of orcas in SeaWorld's care. [...] More than 3,000 species are endangered, and hundreds are lost every year. Americans and thoughtful people everywhere need to acknowledge these fundamental problems. SeaWorld takes seriously its responsibility to preserve marine wildlife. That's why we are partnering with the Humane Society of the United States. Together, we will work against commercial whaling and seal hunts, shark finning and ocean pollution.