This is a cute book that introduces a lot of ocean animals. I read it aloud to a group of two year olds and their caregivers. The difficulty I had is that there is a lot on many pages that needs explanation or discussion (for example, it is very difficult to recognize the octopus because only an arm is shown) but slowing down means that you lose the rhythm of the book. After seeing the shark (sorry, spoiler there), I read very quickly, because our protagonist is fleeing to the top to get away from the shark, but that makes the animals go by even more quickly.
I liked the illustrations, the topic, and the ending, but I felt like the whole thing did not fit together well as a read aloud.