The IUCN (International union for conservation of nature) classifies the killer whales in the "Data Deficient" group when really there is only some specific populations that are threatened. Before 1981, nearly 6,000 killer whales were taken by soviet and Norwegian whalers.
Orcas or also known as Killer have been observed preying on more then 140 animals such as sharks, rays, penguins, turtle's, moose, and 50 different species of marine mammals.
Orcas have been in captivity since 1961 victims of a commercial experiment which has seen a good amount of wild orcas taken from their families and forced to live in whole different environment. To this current day there is 60 orcas held in captivity in at least 14 marine parks in 8 different countries.
While there is much to learn about the long term effects of over fishing, the rate that we are catching the fish and by-catch isn't healthy towards marine life
Over the last few decades 10 different wild orca species have been found. For example the "Bigg's Orcas" that are commonly found in the north pacific, or the "North Atlantic Type 1" these are smaller orcas compared to the "Bigg's Orcas".
During a show at sea world, Dawn Brancheau the veteran trainer was rubbing Tilikum the homicidal killer whale as part of a post show routine when suddenly the orca grabbed her by her ponytail and puller her into the water, the doctors say she died by drowning and blunt force trauma.
SUMMERY: Over 300,000 whales, dolphins are killed after accidentally being entangled in fishing gear. Bycatch is the greatest threat to the endangered north Atlantic right whales. SUSTAINABILITY: This is unsustainable because if the whale keep getting caught as by-catch their population will drop and that will cause a major change in the food chain for example the orcas are one of the top predators in the marine mammals, if they were to go endanger or disappear there would be a big increase on many different marine life. CONNECTIONS: The root cause of this is overfishing because when the bigger fishing boots get bigger nets that they drag through the ocean they catch fish but also catch other marine mammals such as whales turtles, ells, sharks, octopus, and many others witch is really bad.
SUMMERY: Declining Fish Populations are causing Killer whales are causing them to take a variety of different prey due to toxic exposure, surface impacts, underwater noise. SUSTAINABILITY: This is sustainable news because it give facts about how bad these issues actually are and what they are doing to the food-chain in the ocean, they describe it as "The Domino Effect". CONNECTIONS: The main root of these issues is human impact the reason being is because the cargo ships that collide with the whales or the under water noise from vessels is also bad because the orcas communicate from short and long distances with a vary of clicks, chirps, whistles, and squeaks. They also use echolocation to navigate and locate their prey, which is why the noise from vessels is bad and can cause noticeable changes in behavior and gradual decline in the population health.
Orcas habitat oceans all around the world and also have been documented along shallow coasts and are pretty much found all around the world but rarely they are found in fresh water rivers, they are usually found in cold water and not as much in warm water.
Whales play a very important role in the health of our environment and our understanding of marine mammals. Also the whale poop actually plays a kind big role in our environment by stabilizing the offset to the atmospheric providing a healthier environment to both aquatic and land lifeforms.
Over all the Orcas or killer whales are a very interesting and important species to marine life, I believe that there is a hope for their future of the orcas as long as we find out different ways of changing how we fish so we don't catch as much by-catch.