updates | March 16, 2026

Are fossils found in caves?

Why do we study fossils?

Are there live sharks in Mammoth Cave?

First we found shark teeth fossils in the upper levels of the cave. Then we made worldwide news for finding an entire jaw cartilage of an ancient shark species. Now cave researchers have discovered that sharks are still living deep in the lower river levels of this enormous cave system.

Are there spiders in Mammoth Cave?

Underground rivers, including Echo River and the River Styx, flow through Mammoth’s deepest chambers. And in the cave’s absolute blackness dwell many rare and unusual animals, including eyeless fish, ghostly white spiders, and blind beetles. Mammoth Cave National Park’s surface beauty should not be overlooked.

Can a shark be blind?

No, not all sharks are blind. In fact, their eyes contain a retina, lens, iris, and a cornea just like our eyes. They also have rods and cones like our eyes too. Importantly, the rods and cones help the sharks to see color when there are different levels of light.

What is the biggest underwater dinosaur?

Mosasaurus hoffmanni
One of the biggest specimens ever found was identified as Mosasaurus hoffmanni and was estimated to be about 56 feet (17 meters) long in life, according to a 2014 study published in the journal Proceedings of the Zoological Institute RAS. Not all mosasaurs were giants though.

What is the deepest fossil ever found?

The Plateosaurus at the Snorre offshore field had a hollow grave. The fossil, which was found 2256 metres below the seabed, represents the world’s deepest dinosaur finding.

What can we learn from fossils?

By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.

Where can fossils be found?

sedimentary rocks
Where are fossils found? Fossils are found almost exclusively in sedimentary rocks—rocks that form when sand, silt, mud, and organic material settle out of water or air to form layers that are then compacted into rock.

Are there blind cave sharks?

It’s a fact, and the fish that live in caves are blind. Piecing things together like, “Well, fish live in caves and fish are blind and maybe we can make a story about blind cave sharks,” yeah, there’s no such thing.

What animals live inside Mammoth Cave?

Keep your eyes out for common woodland creatures like deer, raccoon, opossum, gray squirrel, rabbit, woodchuck, muskrat, beaver, red fox, coyote, owls and wild turkey, but be careful not to disturb some of Mammoth Cave’s most precious endangered animals, that include the Kentucky Cave Shrimp, the Indiana Brown Bat, and …

What makes Mammoth Cave unique?

Mammoth Cave extends more than 285 miles underneath south-central Kentucky and is the world’s longest cave system. Some of the cave’s natural features include beautiful gypsum flowers, delicate gypsum needles and rare mirabilite flowers, which are minerals shaped like blossoms.

What colors do sharks avoid?

Since sharks see contrast colors, anything that is very bright against lighter or darker skin can look like a bait fish to a shark. For this reason, he suggests swimmers avoid wearing yellow, white, or even bathing suits with contrasting colors, like black and white.

Can a Mosasaurus kill a Megalodon?

So already Mosasaurus does have the intelligence advantage. It can ram the Megalodon and thanks to it’s tail, it can go really fast which would make the impact much more devastating. It will paralyze the shark, once it’s paralyzed, it’s pretty much over.