A TikTok video making the claim has been viewed over 700,000 times.
The Japanese government said in the past that everything is "under control," but measurements from the ocean show that the reactors are still leaking radiation.
The death of the animal is the latest case in what officials have called an "Unusual Mortality Event" that has been ongoing among North Atlantic right whales since 2017.
"It was absolutely amazing to see something so dramatic and intense in person," said 27-year-old Haydn Thomason.
False killer whales are large members of the dolphin family that are found in open waters throughout the tropics and sub-tropics.
The shark is estimated to be around 50 years old and was tagged just off the coast of Nova Scotia, Canada.
The shark responsible for the attack was a blacktip—a species that can grow up to 6.5 feet in length.
A more stably stratified ocean potentially favors more intense, destructive hurricanes—and that's not all.
The woman was treated by medical staff for injuries including multiple puncture wounds and lacerations to her shoulder.
Discarded face masks are frequently being found lying on beaches in Brazil, local marine conservationists have said.
Large numbers of great white sharks gather in the waters off the the Canadian province every year in the late summer and fall.
Over the past decade, the waters off Cape Cod have become one of the world's great white shark hotspots.
The bite was the second most powerful of any animal on Earth.
Chris Black, an Australian shark expert, said the attack was a "freak incident."
"When you see the state of her body, you know she is going to die," said Arnaud Gauffier from WWF France
The cumulative amount of plastic in the ocean by 2040 could reach 600 million tons, according to a report.
Eyewitnesses believe the shark was a great white, although this has not been officially confirmed.
Tiger sharks travel large distances, often crossing regional, national and international boundaries.
Mercury is a potent neurotoxin that can lead to neurological damage.
New findings could have implications for how coral reef island communities adapt to climate change and rising sea levels.
Scientists recorded the video as part of research to conduct an accurate population survey of the animals that nest at the world's largest green turtle rookery.
"As a hybrid oceanographer and astronaut this was an extraordinary day," Kathryn Sullivan said after reaching Challenger Deep.
Unama'ki turned away from the waters off the eastern U.S. coast and started heading deeper into the ocean at the start of April.
Crustaceans emit a wide array of sounds underwater, like many other marine animals.
Microplastics are ubiquitous in the marine environment. However, accurately classifying and quantifying them in the oceans has proven challenging for researchers.
Whale sharks are the largest fish in the oceans, growing to around 30 feet in length on average.
The bizarre creatures are colloquially known as "Elvis worms" due to their shiny scales being reminiscent of the King of Rock's famous sequinned suits.
"We keep putting millions of tonnes of plastic into the ocean every year. This research shows that it is not going to stay there forever. The ocean is giving it back to us," said researcher Steve Allen.
"It's just pretty spectacular," said Venice resident Paige Taylor. "I've seen it maybe once every five years."
Researchers say the journey could reveal a new white shark nursery.