DK 
DK Super Readers Level 4 Shark: Apex Predator 

Use your reading superpowers to learn all about sharks and their hunting grounds – a high-quality, fun, non-fiction reader – carefully levelled to help children progress.
Shark: Apex Predator is a beautifully designed reader all about some of the oceans“ most fearsome hunters.
The engaging text has been carefully levelled using Lexiles so that children are set up to succeed.
A motivating introduction to using essential non-fiction reading skills.
Children will love to find out about all kinds of sharks and their prey.