The Giants exhibition at the National Museum of Scotland displays some of the megafauna that once inhabited the Earth. Here, I highlight two marine species: Livyatan, an ancient sperm whale, and Megalodon, the biggest shark that ever lived.

I visited Sea Life Loch Lomond for the first time in 17 years. I was interested to see what has changed and what has stayed the same in the time since I'd last been there and the aquarium did not disappoint. I have lots to show you.