Scientists Gather to Decode Puzzle of the World’s Rarest Whale in ‘Extraordinary’ New Zealand Study

A handout photo taken on July 5, 2024 and received on July 16 from the New Zealand Department of Conservation shows rangers Jim Fyfe (L) and Tumai Cassidy walking beside what appears to be the carcass of a rare spade-toothed whale after it was discovered washed ashore on a beach near Taieri Mouth in New Zealand's southern Otago province. (Handout / New Zealand Department of Conservation / AFP)
A handout photo taken on July 5, 2024 and received on July 16 from the New Zealand Department of Conservation shows rangers Jim Fyfe (L) and Tumai Cassidy walking beside what appears to be the carcass of a rare spade-toothed whale after it was discovered washed ashore on a beach near Taieri Mouth in New Zealand's southern Otago province. (Handout / New Zealand Department of Conservation / AFP)
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Scientists Gather to Decode Puzzle of the World’s Rarest Whale in ‘Extraordinary’ New Zealand Study

A handout photo taken on July 5, 2024 and received on July 16 from the New Zealand Department of Conservation shows rangers Jim Fyfe (L) and Tumai Cassidy walking beside what appears to be the carcass of a rare spade-toothed whale after it was discovered washed ashore on a beach near Taieri Mouth in New Zealand's southern Otago province. (Handout / New Zealand Department of Conservation / AFP)
A handout photo taken on July 5, 2024 and received on July 16 from the New Zealand Department of Conservation shows rangers Jim Fyfe (L) and Tumai Cassidy walking beside what appears to be the carcass of a rare spade-toothed whale after it was discovered washed ashore on a beach near Taieri Mouth in New Zealand's southern Otago province. (Handout / New Zealand Department of Conservation / AFP)

It is the world’s rarest whale, with only seven of its kind ever spotted. Almost nothing is known about the enigmatic species. But on Monday a small group of scientists and cultural experts in New Zealand clustered around a near-perfectly preserved spade-toothed whale hoping to decode decades of mystery.

“I can’t tell you how extraordinary it is,” said a joyful Anton van Helden, senior marine science adviser for New Zealand’s conservation agency, who gave the spade-toothed whale its name to distinguish it from other beaked species. “For me personally, it’s unbelievable.”

Van Helden has studied beaked whales for 35 years, but Monday was the first time he has participated in a dissection of the spade-toothed variety. In fact, the careful study of the creature -- which washed up dead on a New Zealand beach in July — is the first ever to take place.

None has ever been seen alive at sea.

The list of what scientists don’t know about spade-toothed whales is longer than what they do know. They don’t know where in the ocean the whales live, why they’ve never been spotted in the wild, or what their brains look like. All beaked whales have different stomach systems and researchers don’t know how the spade-toothed kind processes its food. They don’t know how this one died.

Over the next week, researchers studying the 5-meter (16-foot) -long male at an agricultural research center near the city of Dunedin hope to find out.

“There may be parasites completely new to science that just live in this whale,” said van Helden, who thrilled at the chance of learning how the species produces sound and what it eats. “Who knows what we’ll discover?”

Only six other spade-toothed whales have ever been found, but all those discovered intact were buried before DNA testing could verify their identification.

New Zealand is a whale-stranding hotspot, with more than 5,000 episodes recorded since 1840, according to the Department of Conservation. The first spade-toothed whale bones were found in 1872 on New Zealand’s Pitt Island. Another discovery was made at an offshore island in the 1950s, and the bones of a third were found on Chile’s Robinson Crusoe Island in 1986.

DNA sequencing in 2002 proved that all three specimens were of the same species — and that it was distinct from other beaked whales. But researchers studying the mammal couldn’t confirm whether the species was extinct until 2010, when two whole spade-toothed whales, both dead, washed up on a New Zealand beach. But none has been studied before.

On Monday, the seventh of its kind, surrounded by white-aproned scientists who were measuring and photographing, appeared relatively unblemished, giving no clue about its death. Researchers pointed out marks from cookiecutter sharks — normal, they said, and not the cause.

The dissection will be quiet, methodical and slower than usual, because it is being undertaken in partnership with Māori, New Zealand's Indigenous people. To Māori, whales are a taonga -– a precious treasure -– and the creature will be treated with the reverence afforded to an ancestor.

Members of the local iwi, or tribe, will be present throughout the dissection and consulted at each turn, allowing them to share traditional knowledge and observe customs, such as saying a karakia -– a prayer -– over the creature before the study begins.

“According to our beliefs and our traditions, this whale is a gift of Tangaroa, deity of the ocean,” said Tumai Cassidy from the local people Te Rūnanga Ōtākou. “It’s very important for us to respect that gift and to honor the whale.”

The iwi will keep the jawbone and teeth of the whale at the end of the dissection, before its skeleton is displayed in a museum. 3D printing will be used to replicate those parts, using a CT scan taken of the whale’s head this week.

“It all builds a richer picture for that species but also tells us how it interacts with our oceans,” Cassidy said.

It’s thought that spade-toothed whales live in the vast Southern Pacific Ocean, home to some of the world’s deepest ocean trenches. Beaked whales are the ocean's deepest divers for food, and the spade-toothed may rarely surface, adding to its mystery.

The assembled scientists on Monday included a few who had traveled from abroad to see the whale, which was put in refrigerated storage after its discovery.

“What we are interested in is not only how these animals died, but how they lived,” said Joy Reidenberg, a comparative anatomist from the Icahn School of Medicine at Mount Sinai in New York. “In discovering how they live, we are hoping to find discoveries that we can apply back to the human condition.”



Scientists Predict Devastation if Asteroid Bennu Strikes Earth in 2182

FILE - This May 18, 1969 photo provided by NASA shows Earth from 36,000 nautical miles away as photographed from the Apollo 10 spacecraft during its trans-lunar journey toward the moon. (NASA via AP)
FILE - This May 18, 1969 photo provided by NASA shows Earth from 36,000 nautical miles away as photographed from the Apollo 10 spacecraft during its trans-lunar journey toward the moon. (NASA via AP)
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Scientists Predict Devastation if Asteroid Bennu Strikes Earth in 2182

FILE - This May 18, 1969 photo provided by NASA shows Earth from 36,000 nautical miles away as photographed from the Apollo 10 spacecraft during its trans-lunar journey toward the moon. (NASA via AP)
FILE - This May 18, 1969 photo provided by NASA shows Earth from 36,000 nautical miles away as photographed from the Apollo 10 spacecraft during its trans-lunar journey toward the moon. (NASA via AP)

The rocky object called Bennu is classified as a near-Earth asteroid, currently making its closest approach to Earth every six years at about 186,000 miles (299,000 km) away. It might come even closer in the future, with scientists estimating a one-in-2,700 chance of a collision with Earth in September 2182, Reuters reported.
So what would happen should Bennu strike our planet? Well, it would not be pretty, according to new research based on computer simulations of an impact by an asteroid with a diameter of roughly three-tenths of a mile (500 meters) like Bennu.
Aside from the immediate devastation, it estimated that such an impact would inject 100-400 million tons of dust into the atmosphere, causing disruptions in climate, atmospheric chemistry and global photosynthesis lasting three to four years.
"The solar dimming due to dust would cause an abrupt global 'impact winter' characterized by reduced sunlight, cold temperature and decreased precipitation at the surface," said Lan Dai, a postdoctoral research fellow at the IBS Center for Climate Physics (ICCP) at Pusan National University in South Korea and lead author of the study published this week in the journal Science Advances.
In the worst-case scenario, the researchers found that Earth's average surface temperature would decrease by about 7 degrees Fahrenheit (4 degrees Celsius), average rainfall would fall by 15%, there would be a reduction of up to 20-30% in plant photosynthesis and a 32% depletion in the planet's ozone layer that protects against harmful solar ultraviolet radiation.
The impact of a Bennu-sized object - a medium-sized asteroid - on Earth's land surface would generate a powerful shockwave, earthquakes, wildfires and thermal radiation, leave a gaping crater and eject huge amounts of debris upward, the researchers said.
Large quantities of aerosols and gases would reach the upper atmosphere, causing years-long effects on climate and ecosystems, according to Dai and study senior author Axel Timmermann, a climate physicist and ICCP director.
The unfavorable climate conditions would inhibit plant growth on land and in the ocean, they said.
"In contrast to the rapid reduction and slow two-year-long recovery of plants on land, plankton in the ocean would recover within six months - and even increase afterward with unprecedented diatom (a type of algae) blooms triggered by iron-rich dust deposition into the ocean," Dai said.
Severe ozone depletion would occur in the stratosphere - the second atmospheric layer as you go upward - due to strong warming caused by the solar absorption of dust particles, the researchers said.
An asteroid collision of this magnitude could cause massive loss of human life, but that calculation was outside the study's scope. Dai said the potential death toll "mainly depends on where the asteroid impact occurs."
Scientists know a great deal about Bennu, considered a "rubble pile" asteroid - a loose amalgamation of rocky material rather than a solid object. It is a rocky remnant of a larger celestial body that had formed near the dawn of the solar system roughly 4.5 billion years ago. NASA's robotic OSIRIS-REx spacecraft journeyed to Bennu and in 2020 collected samples of rock and dust for analysis.
A study published in January showed that Bennu's samples bore some of the chemical building blocks of life, strong evidence that asteroids may have seeded early Earth with the raw ingredients that fostered the emergence of living organisms.
Asteroids have struck Earth occasionally over its long history, often with cataclysmic results. An asteroid estimated at 6-9 miles (10-15 km) wide hit off the coast of Mexico's Yucatan Peninsula 66 million years ago, eradicating about three-quarters of the world's species and ending the age of dinosaurs.
NASA in 2022 carried out a proof-of-principle planetary defense mission by using its robotic DART spacecraft to change the trajectory of the asteroid Dimorphos, with an eye toward doing this in the future if one appears on a collision course with Earth.
"The likelihood that a Bennu-sized asteroid will strike Earth is quite small at 0.037%. Even though small, the potential impact would be very serious and would likely lead to massive longer-term food insecurity on our planet and climate conditions that are similar to those seen only for some of the largest volcanic eruptions in the last 100,000 years," Timmermann said.
"So it is important to think about the risk," Timmermann added.