The Secret in the Abyss: The Secret in the Abyss
(Reklamlänk)
The adventures of Olli and his friends continue. Going alone he meets a seahorse and a turtle and learns about their life in the ocean. . With his guppy friends he has a fun silly day.
On their field trip into the dark Abyss they discover something exciting, finding out about humans which they never saw before, and then get to meet some of them.
