Naked Mole-Rat

The naked mole-rat (heterocephalus glaber) is found in East Africa, ranging from Ethiopia and Somalia to northern Kenya. They are small rodents that are around 5-6 inches long and weigh only a few ounces. They may be small, but they make up in sheer numbers. Naked mole-rats live in large colonies of extended families, run by a single queen. Similar to the way termites live, the mole-rat queen is a lot larger and is the only female in the colony that is able to breed. 

Naked mole-rats are well adapted to living underground. Having no hair means that they won't get dirty when they dig and allows them to slide past each other in their close quarters. Unlike what their name implies, naked mole-rats are not moles, they are a totally different specie, and do not have the large burrowing claws like a regular mole. To make tunnels, they use their teeth. Like all rodents, they have bucked incisors that grow constantly. However, the mole-rat's teeth grow outside of their mouths. This allows them to close their mouths while they are burrowing so they don't get a mouthful of dirt. 

Living in such close proximity to each other can mean it can get rather stuffy in a mole-rat colony and hard to breath. However, this does not bother them. Unlike other animals, mole-rats can survive for long periods of time with little oxygen. When we breath (the process is called respiration), we bring oxygen to our blood that brings it to the rest of our body, and more importantly, our brains. If our bodies go for a long time with out oxygen, we can suffer brain damage or even death. 

Not only can mole-rats survive in their low oxygen environment, but they can also survive in highly acidic soil and toxic metals with out a problem, as well as feeling no pain. They also never get cancer and age differently than other rodents for it's size. Normal rodents that are the same size as the naked mole-rat live around 2 to 4 years. Mole rats can live up to 30 years and show no sign of aging. Our bodies are made out of individual cells that have a specific purpose. As we grow, our cells replicate to replace cells that have died or been damaged. As cells replicate, some pieces don't replicate correctly, break down, or stop working. This causes aging. Even at 30 years old, a mole-rat's cells still look fresh and new, like they don't age at all! Mole rat's are like little super heroes!

Source:  The Encyclopedia of Animals, 2006, Per Christiansen. 
Underground Supermodels: What can a twenty something naked mole-rat tell us about fighting pain, cancer, and aging?, Thomas Park and Rochelle Duffenstein, The Scientist Magazine (June 2012), http://www.the-scientist.com/?articles.view/articleNo/32136/title/Underground-Supermodels/(Accessed Jan. 31, 2014).

Giant Oarfish

The giant oarfish (Regalecus glesne), also known as a ribbon fish, is considered to be the world's largest bony fish. This means they have a skeleton made of bone, like humans, instead of cartilage, like sharks and stingrays. The oarfish can be as long as 56 feet long and can weigh up to 600 pounds! That's a lot of fish! The oarfish is found deep in the oceans around 3,300 feet, and very seldom seen. Most information that scientist has come from dead or dying fish that float to the surface or wash ashore. They made news last year when two of the fish washed ashore in October within a week. 

The oarfish may be big, but it only eats plankton, which are very small crustaceans. They have relatively small toothless mouths and catch food through structures called gill rackers that act similar to the baleen in whales. As water goes through the gill rackers, small creatures get stuck and become a meal. The oarfish does not have scales on it's body, making them very fleshy and sustainable to injuries at the surface. 

Oarfish move like other fish, but also have the ability to hover vertically in the water by movements with their dorsal fin, which is the fin located at the top of their body. This allows them to easily move forward and backward. 

Oarfish were discovered over 200 years ago in 1772. Sightings of ones floating on the surface with their snake like appearance were often thought to be sea serpents. People who have tried eating an oarfish say it tastes like goo with the texture of gelatin. So, if you have tasted goo, you've tasted an oarfish.

Here is a good video of a living giant oarfish!

Here is one of your own to color!

Source: 5 Surprising Facts About the Oarfish That Has Been  Washing Up on Beaches, 2013, Brian Clark Howard, National Geographic, http://news.nationalgeographic.com/news/2013/10/131022-giant-oarfish-facts-sea-serpents/, accessed Jan. 11, 2014.