The creatures, which appear in the area every spring, reportedly have jaws strong enough to tear through human skin.
The fish is only found in the waters of Costa Rica's Cocos Island.
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.
False killer whales are large members of the dolphin family that are found in open waters throughout the tropics and sub-tropics.
"I don't frighten easily and this was terrifying," boatsman David Smith said.
Three young orcas have been targeting yachts along the coasts of Spain and Portugal since the summer.
This is the first time the 23-foot-long creature has been recorded in Australian waters.
A 15-foot shark was discovered washed up ashore along the coast in Libya with an adult swordfish "blade" stuck in its back after what scientists called a "deadly interaction".
The shark, known as Unama'ki, has traveled more than 12,500 miles since being tagged in September, 2019.
The ram's horn squid was filmed off the coast of Australia by researchers with the Schmidt Ocean Institute.
Otters have been filmed eating puffaddder shysharks on the coast of False Bay, South Africa.
The attack took place off the coast of Portugal and is the latest in a string of similar incidents.
Research into the attacks, which took place in the Baltic Sea over three months in 2016, is still ongoing.
The seven foot porbeagle shark had been entangled in a piece of plastic when it was younger.
Researchers say three whales were responsible for more than 60 percent of recent attacks.
After reviewing footage of the attacks, researchers found two of the orcas involved were seriously injured.
Marine biologist describes injuries sustained by the sharks in South Africa after being hunted by orca.
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.
The parasite is a type of isopod—an ancient order of crustaceans that includes woodlice and their relatives.
The experiment was conducted by former NASA engineer and YouTuber Mark Rober.
"When you see the state of her body, you know she is going to die," said Arnaud Gauffier from WWF France
Tiger sharks travel large distances, often crossing regional, national and international boundaries.
Researchers find their eyes are covered with "dermal denticles" that help protect these organs.
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.
Researchers conducted the first ever detailed study of the diets of great whites off the east coast of Australia.
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.