Two years after the first big finding of a new species in the oceans, scientists have reported finding another nearly 2,100 new species that could threaten marine mammals, sharks and other animals.
Researchers at the Scrippers Institution of Oceanography say they’ve found nearly 700 new species, including about 1,600 sharks, around the world.
The new species include a variety of new species and include a new genus of shark called a red mullet, which is found in the waters off South America, researchers said in a report Thursday.
They’re also discovering a new family of tiger sharks, known as the red tiger, as well as new species found in deep-sea sediment.
The study, published in the journal PLOS ONE, shows that while scientists have known about shark diversity for decades, the number of new animals has skyrocketed in the last decade, said study lead author John W. Kayser, a professor of marine biology at the University of California, San Diego.
It’s really hard to put a value on that number, but it’s something to be concerned about, he said.
We’re seeing this sort of rapid increase in the number and diversity of species that have been identified.
It could be a signal to the general public that there’s still a need for a global system of conservation, said Kaysar, who presented the findings at the meeting of the Society for Marine Biology.
The finding of two new species could put pressure on a global program to conserve sharks.
A team led by Kaysr and colleagues at the Woods Hole Oceanographic Institution in Massachusetts reported last year that sharks in the Atlantic Ocean have shrunk by almost half since 2007.
The new report shows that, although shark populations have increased, shark populations are still declining.
The scientists say the species with the largest declines in the ocean are tiger sharks.
These sharks have been shrinking in recent years, with populations in the Southern Ocean shrinking by about 20 percent from 2005 to 2016, the study found.
The team also found that tiger sharks were being affected by pollution and climate change.
Tiger sharks are found in waters off Brazil, the Caribbean and the Gulf of Mexico.
Scientists say that because tiger sharks feed on small fish, and have little predators like sharks and rays, the decline of tiger shark populations could be driven by a combination of habitat loss, pollution and other factors, according to a statement on the report.
The researchers also found more than a dozen new species discovered in the Pacific Ocean that were also found in marine sediment and other marine organisms, but that were not related to sharks.