This is a huge situation that needs to be resolved permanently. Aquariums around the world hold many marine creatures in captivity, and orcas are one of them. They are not kept just for show, but instructors also teach them to perform in aquariums for the public. John Jett and Jeffery Ventre, authors of “Captive Killer Whale (Orcinus Orca) Survival” talk about the cruelty and capture procedures that occur in captivity. “Killer whales (Orcinus orca) were first brought into captivity in 1961 and are now found in theme parks around the world.” Research has shown us that 55 years have passed and we still have orcas in captivity. How come nothing has changed even when most humans know it's wrong? With the whales held hostage, they have difficulty surviving. John Jett and Jeffery Ventre state: "Despite the success of breeding orcas in captivity since 1985, there is growing concern about their welfare in captivity, which often includes claims of poor survival." These theme parks where orcas are captive are multiplying due to humans raising them by hand but clearly not treating them seriously and for that reason, places like that should be closed down