Extreme Planet: The Deep by Laura Cowan (author) and Qu Lan (illustrator)

Are you brave enough to delve into the chilling darkness of… THE DEEP? With no light, no heat and miles of sea above you, it might be the strangest, most extreme place on Earth. So, climb inside the submersible and plunge deep down beneath the sunlit surface where you’ll discover disturbing and unusual creatures, explore alien-looking worlds and visit the deepest place in the entire ocean, all in this weird and wonderful flap book.