Max Flash: In Deep
Jonny Zucker, Ned Woodman
The Department for Extraordinary Activity informs Max Flash – explosive escapologist and master magician – that an island in the Pacific has been flooded by a freak surge of water, and they suspect sinister forces are at work. It’s time for Max to dive straight into a perilous underwater adventure.
Reviews

My favorite part was when he wore something(I forget what he was wearing around his waist) and when he was about to get eaten.
Judge Flopsy Pendragon 01.09.2023

this book is really exciting because its got a lot of anonymous bits
Anonymous 07.08.2017

What a underwater adventure
Anonymous 23.06.2016

I really liked this book because it had humor and action which went well together.
Anonymous 26.08.2014

Wickid
Anonymous 24.06.2014

Max Flash who is a master magician gets recruited for the Department for Extra Ordinary Activity (DEFA) for the third time. This mission is where he has to go underwater using a special swimming suit to find out why there has been massive waves near a island. When Max goes underwater he finds a underwater city who is going to take over the world and take all of it's minerals.
Anonymous 24.06.2014