To cheer everyone up, a bit of crocodile physiology. Just to freak everyone out they have two aortas that join together in two different places and a cog teeth valve that is actively controlled to allow shunting Which also incidentally returns a lot of co2 back to the stomach to help acidify their gastric acid for the next meal. In addition to obviously being able to switch between systemic and pulmonary circulations.

A tale of the blobfish and intensive care Voted the ugliest animal alive in 2013, probably unfairly, given it is used to living at up to 160 atmospheres of pressure and is decompressed on ascension to the bycatch nets it has been found in

I went to med school to be a medical geneticist (went off piste) but always been fascinated by it. One way the environment interacts with our genome is through methylation - the addition of methyl groups to certain points in the dna string This physical/chemical manipulation changes how the dna string folds and how easy it is for transcription machinery to access it. We have the same genome as ourselves as an egg, but clearly have organs and limbs now - methylation helped the egg produce these changes