Florida Is Home to 'Skull-Collecting' Ants, Because Florida

Florida’s Formica archboldi ants are not to be messed with. As Newsweek reports, a North Carolina-based researcher recently discovered that the species applies a waxy coat to its body to chemically mimic its intended prey, a kind of trap-jaw ant in the genus Odontomachus. Then, the predator sprays its unsuspecting prey with acid to immobilize it and drags it back to its underground lair, where it dismembers the body and presumably eats everything but the hollowed-out heads.

The Florida ant’s habit of letting the heads pile up in its nest has earned it a pretty grisly nickname: the “skull-collecting ant.” This behavior has been observed since the 1950s. However, scientists have only recently learned how the Florida ant manages to kill trap-jaw ants, which are formidable predators in their own right (they can snap their jaws shut at speeds of over 100 miles an hour).

Researcher Adrian Smith, head of the Evolutionary Biology & Behavior Research Lab at the North Carolina Museum of Natural Sciences, observed the F. archboldi ants mimicking trap-jaw ants at the chemical level by coating their bodies in the same waxy substance that covers their prey. Smith says they’re probably disguising themselves, but the extent to which they do so isn’t yet known.

The ants were also seen shooting formic acid from their abdomens to render the trap-jaw ants motionless. The new findings were published in the journal Insectes Sociaux, and Smith even captured the gruesome action on camera, which you can check out in the video below.

Smith says he’s been fascinated with the ants—which are also found in parts of Alabama and Georgia—since he was an undergrad student at Florida State.

“They’re one of the most badass ants I know of. That’s why I wanted to study them—they decorate their nests with skulls,” Smith told The Verge. “A lot of other ants do cool things, but these are special to me because they’re from Florida, and I’m from Florida."

[h/t Newsweek]

Australian Island Wants Visitors to Stop Taking Wombat Selfies

iStock.com/LukeWaitPhotography
iStock.com/LukeWaitPhotography

Spending a day observing Australian wildlife from afar isn't enough for some tourists. On Maria Island, just off the east coast of Tasmania, many visitors can't resist snapping pictures with the local wombats—and the problem has gotten so out of hand that island officials are asking people to pledge to leave the cute marsupials out of their selfies.

As CNN Travel reports, the Maria Island Pledge has been posted on signs welcoming visitors to the national park. It implores them to vow to the island to "respect and protect the furred and feathered residents." It even makes specific mention of the wombat selfie trend, with one passage reading:

"Wombats, when you trundle past me I pledge I will not chase you with my selfie stick, or get too close to your babies. I will not surround you, or try and pick you up. I will make sure I don’t leave rubbish or food from my morning tea. I pledge to let you stay wild."

The pledge isn't a binding contract guests have to sign. Rather, park officials hope that seeing these signs when they arrive will be enough to remind visitors that their presence has an impact on the resident wildlife and to be respectful of their surroundings.

The adorable, cube-pooping wombats at Maria Island are wild animals that aren't accustomed to posing for pictures, and should therefore be left alone—though in other parts of Australia, conservationists encourage tourists to take wildlife selfies. Rottnest Island off the country's west coast is home to 10,000 quokkas (another photogenic marsupial), and the quokka selfies taken there help raise awareness of their vulnerable status.

[h/t CNN Travel]

Divers Swim With What Could Be the Biggest Great White Shark Ever Filmed

iStock.com/RamonCarretero
iStock.com/RamonCarretero

New pictures and video taken by divers show what could possibly be the largest great white shark ever caught on camera, CNN Travel reports.

Deep Blue, a 50-plus-year-old great white first documented 20 years ago, was spotted off the coast of Hawaii recently in a rare close encounter. Divers were filming tiger sharks feeding on a sperm whale carcass south of Oahu when Deep Blue swam up and began scratching herself on their boat. They accompanied the shark in the water for the rest of the day, even getting close enough to touch her at times.


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"She swam away escorted by two rough-toothed dolphins who danced around her over to one of my [...] shark research vessels and proceeded to use it as a scratching post, passing up feeding for another need," Ocean Ramsey, one of the divers, wrote in an Instagram post.


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A post shared by Ocean Ramsey #OceanRamsey (@oceanramsey) on

Deep Blue is roughly 20 feet long and weighs an estimated 2 tons—likely making her one of the largest great whites alive. (The record for biggest great white shark ever is often disputed, with some outlets listing an alleged 37-foot shark recorded in the 1930s as the record-holder.)

Deep Blue looks especially wide in these photos, leading some to suspect she's pregnant. Swimming so close to great whites is always dangerous, especially when they're feeding, but older, pregnant females tend to be more docile.

Though great white sharks are the largest predatory sharks in the ocean, sharks of Deep Blue's size are seldom seen, and they're filmed alive even less often, making this a remarkable occurrence.

[h/t CNN Travel]

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