Thomas Cook to stop trips to parks that keep killer whales
Orca whales or killer whales are incredible creatures - and it's a lot easier to see them at a theme park like, SeaWorld in the US, than in the wild out in the ocean.
Some think killer whales shouldn't be kept in captivity and should be in their natural environment.
From next summer it won't sell tickets to SeaWorld in Florida, and Loro Parque in Tenerife, Spain.
Watch Naz's report to find out why.