Thanks to a cold environment, which causes a slow metabolism, bowhead whales (Balaena mysticetus) can live for more than 200 years - nearly 3 times longer than the average human, making it the longest-lived mammal.

Bowhead whales can grow 14 to 18 m (46 to 59 ft) in length, and unlike most whales, they lack a dorsal fin. This thick-bodied species can weigh from 75 to 100 tonnes (82 to 110 US tons). They live entirely in fertile Arctic and sub-Arctic waters, unlike other whales that migrate to low latitude waters to feed or reproduce. The bowhead also has the largest mouth of any animal.

Of course, following around a whale to measure how long it lives is practically impossible. Researchers discovered this amazing feature in 2007, when a 15 m ...

Proteins are subatomic biomolecules. They're produced by cells, so it's logical to assume that they are much tinier than cells, and of course, much tinier than the organelles that produce them. In a remarkable achievement, scientists have now obtained the first-ever photographs of single proteins. Using a "holography electron microscope," researchers tested on a range of protein samples, all just a few nanometers in size. Hemoglobin, the protein that transports oxygen in red blood cells, and cytochrome c, the protein that transfers electrons within the body, were just two examples.

Source: arXiv ...

The long-lasting search and debate around the size and identity of the world's smallest free-living insect seems to have now ended with the precise measurement and second record of the featherwing beetle species (Scydosella musawasensis). Described in 1999, representatives of this minute beetle have recently been retrieved once again from fungus in Colombia. The smallest individual measured the astounding 0.325 mm. ...

According to this poster, a giant panda mom is 900 times more massive than her baby, while a giraffe baby is one-tenth the size of its mom!

Rhino beetles and other ginormous bugs are kept as pets, used in gambling fights, and also eaten as food. You've got to see the size of these things!

Here are the most accurate measurements of the ocean's biggest animals. These are confirmed measurements, unlike many found on the internet that state outrageous numbers.