Whale Sharks Can Live for More Than a Century, Study Finds

iStock
iStock

Some whale sharks alive today have been swimming around since the Gilded Age. The animals—the largest fish in the ocean—can live as long as 130 years, according to a new study in the journal Marine and Freshwater Research. To give you an idea of how long that is, in 1888, Grover Cleveland was finishing up his first presidential term, Thomas Edison had just started selling his first light bulbs, and the U.S. only had 38 states.

To determine whale sharks' longevity, researchers from the Nova Southeastern University in Florida and the Maldives Whale Shark Research Program tracked male sharks around South Ari Atoll in the Maldives over the course of 10 years, calculating their sizes as they came back to the area over and over again. The scientists identified sharks that returned to the atoll every few years by their distinctive spot patterns, estimating their body lengths with lasers, tape, and visually to try to get the most accurate idea of their sizes.

Using these measurements and data on whale shark growth patterns, the researchers were able to determine that male whale sharks tend to reach maturity around 25 years old and live until they’re about 130 years old. During those decades, they reach an average length of 61.7 feet—about as long as a bowling lane.

While whale sharks are known as gentle giants, they’re difficult to study, and scientists still don’t know a ton about them. They’re considered endangered, making any information we can gather about them important. And this is the first time scientists have been able to accurately measure live, swimming whale sharks.

“Up to now, such aging and growth research has required obtaining vertebrae from dead whale sharks and counting growth rings, analogous to counting tree rings, to determine age,” first author Cameron Perry said in a press statement. ”Our work shows that we can obtain age and growth information without relying on dead sharks captured in fisheries. That is a big deal.”

Though whale sharks appear to be quite long-lived, their lifespan is short compared to the Greenland shark's—in 2016, researchers reported they may live for 400 years. 

Elderly Sloths Live Out Their Golden Years at a 'Retirement Home' in Wales Zoo

iStock.com/TheDman
iStock.com/TheDman

Where do sloths go when they retire from a cushy career of tree-dwelling and leaf-munching? To Wales, apparently. As The Atlanta Journal-Constitution reports, the Folly Farm in Pembrokeshire operates a retirement home for sloths of advanced age.

By removing older sloths from zoos and bringing them to the new facility in the southwest of Wales, space is freed up for younger sloths to mate. In turn, this helps conservation efforts, while also ensuring that older sloths get the love and care they deserve.

Much like human senior citizens, older sloths prefer to eat softer foods, such as boiled root vegetables. Their caretakers also ensure they get a regular dose of cod liver oil supplements to keep them healthy. The animals are still active, but with limited mobility. If they show any signs of struggling, staff might lower a tree's branches to make it easier for them to get down, according to zoo curator Tim Morphew.

Currently, the Folly Farm—which opened the retirement home last year—has two residents. Lightcap, a two-toed sloth, is one of the oldest sloths in Europe at 34 years old. Her roommate, Tuppee, is 10 years younger, but he’s also more cantankerous.

“Like many older men, Tuppee has been known to be a bit grumpy and even misbehaves at times but we know he’s a softie at heart,” Morphew told the BBC. “We’re hoping some older, female company will be a good influence on him and bring out the softer side of his nature. Sloths aren’t known for being social animals, but as they get older, we’ve found they do like company.”

Considering that sloths are pretty defenseless creatures, the animals live surprisingly long lives. Two-toed sloths live about 20 years in the wild, but can live more than 40 years in a zoo. In 2017, the world’s oldest sloth—a Hoffmann’s two-toed sloth named Miss C—died at an Australian zoo at the age of 43.

Morphew says the zoo may expand its sloth retirement home in the future.

[h/t The Atlanta Journal-Constitution]

These Custom-Made Slippers Are Designed to Look Exactly Like Your Pet

Cuddle Clones
Cuddle Clones

What gift do you get for the friend who’s completely obsessed with their cat or dog? Fluffy slippers that look just like their pet, of course. As Delish reports, Louisville, Kentucky-based company Cuddle Clones lets you upload photos of your pet and decide how you want them to appear—whether it’s in the form of a plush “clone” or furry footwear that you can sport around the house.

Many of the slippers are eerily lifelike and bear an uncanny resemblance to the animal they’re modeled after. “We do our very best to ensure that your Cuddle Clone captures the characteristics and likeness of your pet to the absolute best of our abilities,” the company writes on its website. “We are very proud of our products and how much they resemble the actual pets.”

A woman wears personalized dog slippers
Cuddle Clones

If customers aren’t completely satisfied with their order, Cuddle Clones offers a money-back guarantee. The process of ordering a pair of slippers is simple but takes some time. First, customers are prompted to enter their pet’s name and select its species—dog, cat, horse, and “other” are listed—as well as its breed.

From there, they will be asked to upload multiple photos of their pet’s face, chest, tail, fur color, and physique from various angles (including their right side, left side, and even their backside). They can then choose the eye color, list any distinguishing characteristics, and decide if they want the plush version of their pet to appear in any particular position.

The slippers, which are made in China, take eight weeks to make and ship to the U.S. However, customers can pay extra for expedited orders. They’re a bit pricey at $199, but then again, you’re paying for a handcrafted, personalized product.

Personalized cat slippers
Cuddle Clones

In addition to the “clones” and slippers, Cuddle Clones will also make personalized golf club covers, purses, and holiday stockings with your pet’s face on them. That way, you can take your fur baby with you anywhere, whether you’re on the golf course or out on the town.

[h/t Delish]

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