A 15-foot killer whale was found washed up on the UK coast, which makes it the first in nearly 2 decades.

The 15-foot-long orca was discovered with a stomach full of plastic in the salt marshes on the eastern coast, which is located between Lincolnshire and Norfolk.

According to the Cetacean Strandings Investigation Programme (CSIP), a large fragment of plastic materials was found in the body of the orca.

The organization says this was unlikely the cause of its death.

In nearly 20 years, this is the first confirmed standing of a killer whale that washed up on the coast of the United Kingdom.

The numbers have been confirmed by the Zoological Society of London.

The Cetacean Strandings Investigation Programme (CSIP) said there are just 4 other reports of orcas washing up on the coastline of England and Wales since they started.

The CSIP said, “This was a markedly unusual stranding event.”

Rob Deaville and Matt Perkins of the Zoological Society of London took samples from the liver, muscles, kidney, and blubber of the whale.

Upon the discovery of the whale, its body was already decomposing, suggesting that the whale had been dead for a couple of weeks.

The body was intact when it was discovered, but some of its parts started to decompose.

The CSIP said, “Killer whales are a priority species for the project given the conservation pressure that they’re under — as apex predators, they’re unfortunately exposed to high levels of legacy chemical pollutants.”

The samples that were obtained will help authorities will help the organization understand the future about these animals.

Experts said the number of orcas found along the coast has dramatically decreased in the past couple of years.

Researchers from the Zoological Society and Aarhus University recently said that the seas of the UK were one of the most polluted seas in the world.

The university said this fact could lead to a killer whale apocalypse.