Today’s interesting fact has to do with the Horseshoe Crab.

The Horseshoe crab is considered a living fossil. Fossils that looks almost exactly like the Horseshoe crab show that an animal with the same body and structure first appeared about 450 million years ago and has hardly changed in all that time, which is far longer than most species of plants or animals, including humans can ever hope to exist.

 The Horshoe crabs blood is blue, because it is based around the copper atom instead of an iron atom.

Today’s interesting fact has to do with moths.

Moths are closely related to butterflies and are in the same order, Lepidoptera.

There are thought to be between 150,000 and 250,000 species of moths in the world, perhaps 10 times as many butterfly species.

Most are nocturnal but some work at twilight or during the day.

Some moths can be easily identified when in caterpillar form and others are easily identified as adults, but many are so similar that the only way to properly identify them is to scan their genetics, which is time consuming, and as most species moths have not had their genes analysed yet, pointless; or to dissect their genitals, which involves killing the moth.

Most moth species have genitals that are completely different, with male and female parts fitting together in one specific way, thus preventing breeding with incompatible species.