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London Zoo's Residents Are Counted in their Annual Stocktake

A zoo keeper counts Squirrel Monkeys during the annual stocktake at London Zoo in London, Friday, Jan. 3, 2025. (AP Photo/Kin Cheung)
A zoo keeper counts Squirrel Monkeys during the annual stocktake at London Zoo in London, Friday, Jan. 3, 2025. (AP Photo/Kin Cheung)
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London Zoo's Residents Are Counted in their Annual Stocktake

A zoo keeper counts Squirrel Monkeys during the annual stocktake at London Zoo in London, Friday, Jan. 3, 2025. (AP Photo/Kin Cheung)
A zoo keeper counts Squirrel Monkeys during the annual stocktake at London Zoo in London, Friday, Jan. 3, 2025. (AP Photo/Kin Cheung)

From alpacas to zebras — and lots of birds, reptiles and invertebrates in between — London Zoo on Friday is taking stock of what it possesses.
The annual census of the zoo's 10,000-plus occupants is a requirement of its license, and the information gleaned will be shared with zoos around the world to help manage breeding programs of endangered species.
Glynn Hennessy, the zoo's lead primate keeper, said that zoos are “really good now” at sharing information.
“We can sort of see the genetic pathway of every individual,” The Associated Press quoted him as saying. “We can see who their grandparents were, how they're overrepresented, if they are underrepresented, so it gives us so much information to make sure that we're breeding responsibly.”
Hennessy said that 2024 was a “massive” year for the zoo with two baby gorillas — Juno and Venus — and three Asiatic lion cubs — Mali, Syanii and Shanti — born. There were also 11 penguin chicks, always a fan favorite.
And for those who like their frogs, there are 53 new ones to admire. And not just any frog. The new residents are named after Charles Darwin, no less, and arrived in the fall from Chile as part of an effort to save the species from a deadly fungus.
While recording large mammals is relatively simple, it's not so easy to identify the diverse array of invertebrates, which now includes a new thriving hive of honeybees, which luckily for the number crunchers will only be counted as one.

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Deep-sea Fish Break the Mold with Novel Visual System

A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
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Deep-sea Fish Break the Mold with Novel Visual System

A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS

For more than a century, biology textbooks have stated that vision among vertebrates - people included - is built from two clearly defined cell types: rods for processing dim light and cones for bright light and color. New research involving deep-sea fish shows this tidy division is, in reality, not so tidy.

Scientists have identified a new type of visual cell in deep-sea fish that blends the shape and form of rods with the molecular machinery and genes of cones. This hybrid type of cell, adapted for sight in gloomy light conditions, was found in larvae of three deep-sea fish species in the Red Sea, Reuters reported.

The species studied were: a hatchetfish, with the scientific name Maurolicus mucronatus; a lightfish, named Vinciguerria mabahiss; and a lanternfish, named Benthosema pterotum. The hatchetfish retained the hybrid cells throughout its life. The other two shifted to the usual rod-cone dichotomy in adulthood.

All three are small, with adults measuring roughly 1-3 inches (3-7 cm) long and the larvae much littler. They inhabit a marine realm of twilight conditions, with sunlight struggling to penetrate into the watery depths.

The vertebrate retina, a sensory membrane at the back of the eye that detects light and converts it into signals to the brain, possesses two main types of light-sensitive visual cells, called photoreceptors. They are named for their shape: rods and cones.

"The rods and cones slowly change position inside the retina when moving between dim and bright conditions, which is why our eyes take time to adjust when we flick on the light switch on our way to the restroom at night," said Lily Fogg, a postdoctoral researcher in marine biology at the University of Helsinki in Finland and lead author of the research published in the journal Science Advances.

"We found that, as larvae, these deep-sea fish mostly use a mix-and-match type of hybrid photoreceptor. These cells look like rods - long, cylindrical and optimized to catch as many light particles - photons - as possible. But they use the molecular machinery of cones, switching on genes usually found only in cones," Fogg said.

The researchers examined the retinas of fish larvae caught at depths from 65 to 650 feet (20 to 200 meters). In the type of dim environment they inhabit, rod and cone cells both are usually engaged in the vertebrate retina, but neither works very well. These fish display an evolutionary remedy.

"Our results challenge the longstanding idea that rods and cones are two fixed, clearly separated cell types. Instead, we show that photoreceptors can blend structural and molecular features in unexpected ways. This suggests that vertebrate visual systems are more flexible and evolutionarily adaptable than previously thought," Fogg said.

"It is a very cool finding that shows that biology does not fit neatly into boxes," said study senior author Fabio Cortesi, a marine biologist and neuroscientist at the University of Queensland in Australia. "I wouldn't be surprised if we find these cells are much more common across all vertebrates, including terrestrial species."

All three species emit bioluminescence using small light-emitting organs on their bodies, mostly located on the belly. They produce blue-green light that blends with the faint background light from the sun above. This strategy, called counterillumination, is a common form of camouflage in the deep sea to avoid predators.

"Small fish like these fuel the open ocean. They are plentiful and serve as food for many larger predatory fishes, including tuna and marlin, marine mammals such as dolphins and whales, and marine birds," Cortesi said.

These kinds of fish also engage in one of the biggest daily migrations in the animal kingdom. They swim near the surface at night to feed in plankton-rich waters, then return to the depths - 650 to 3,280 feet (200 to 1,000 meters) - during daytime to avoid predation.

"The deep sea remains a frontier for human exploration, a mystery box with the potential for significant discoveries," Cortesi said. "We should look after this habitat with the utmost care to make sure future generations can continue to marvel at its wonders."

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Japan City Gets $3.6 Mn Donation in Gold to Fix Water System

FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
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Japan City Gets $3.6 Mn Donation in Gold to Fix Water System

FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo

Osaka has received an unusual donation -- 21 kilograms of gold -- to pay for the maintenance of its ageing water system, the Japanese commercial hub announced Thursday.

The donation worth $3.6 million was made in November by a person who a month earlier had already given $3,300 in cash for the municipal waterworks, Osaka Mayor Hideyuki Yokoyama told a press conference.

"It's an absolutely staggering amount," said Yokoyama, adding that he was lost for words to express his gratitude.

"I was shocked."

The donor wished to remain anonymous, AFP quoted the mayor as saying.

Work to replace water pipes in Osaka, a city of 2.8 million residents, has hit a snag as the actual cost exceeded the planned budget, according to local media.

Varieties

Thai Cops Go Undercover as Lion Dancers to Nab Suspected Thief

People gather to watch performers outside Emsphere shopping mall on the first day of the Lunar New Year of the Horse, in Bangkok on February 17, 2026. (Photo by Lillian SUWANRUMPHA / AFP)
People gather to watch performers outside Emsphere shopping mall on the first day of the Lunar New Year of the Horse, in Bangkok on February 17, 2026. (Photo by Lillian SUWANRUMPHA / AFP)
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Thai Cops Go Undercover as Lion Dancers to Nab Suspected Thief

People gather to watch performers outside Emsphere shopping mall on the first day of the Lunar New Year of the Horse, in Bangkok on February 17, 2026. (Photo by Lillian SUWANRUMPHA / AFP)
People gather to watch performers outside Emsphere shopping mall on the first day of the Lunar New Year of the Horse, in Bangkok on February 17, 2026. (Photo by Lillian SUWANRUMPHA / AFP)

Thai police donned a lion dance costume during this week's Lunar New Year festivities to arrest a suspect accused of stealing about $64,000 worth of Buddhist artifacts, police said Thursday.

Officers dressed as a red-and-yellow lion made the arrest on Wednesday evening after receiving a report earlier this month of a home burglary in the suburbs of the capital, Bangkok, AFP reported.

Capital police said the reported break-in involved "numerous Buddhist objects and two 12-inch Buddha statues", along with evidence of repeated attempts to enter the house, according to a statement.

With few leads, police kept watch for weeks before hatching an unusual plan to join a lion dance procession at a nearby Buddhist temple.

"Officers gradually moved closer to the suspect before arresting him," police said.

A video released by police showed the festive lion dancers approaching the suspect before an officer suddenly emerged from the head of the costume and, with help from colleagues, pinned him to the ground.

Police estimated the value of the stolen items at around two million baht ($64,000).

The suspect, a 33-year-old man, has a criminal record involving drug offences and theft, police added.