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Max and Lia's underwater adventure concludes in this thrilling series by Beast Quest author, Adam Blade! Max and Lia have tracked the evil Professor to his lair in the Black Caves. Neither of them are ready for what awaits them there. Kraya the Blood Shark, with his razor sharp teeth and laser cannons is the most vicious of all the Robobeasts. Max must survive if he wants to finally come face-to-face with the Professor to save his father and retrieve the fourth and final piece of the Skull of Thallos. But there are still some secrets Max has not uncovered and they could lead to Max's defeat.

A brand-new underwater adventure from Adam Blade, author of the Beast Quest series! Max's home, the floating city of Aquora, is attacked by Cephelox the Cyber Squid and his father is carried away by the Robobeast. Max and his robodog, Rivet, set off on a rescue mission. Along the way, they meet Lia, a princess of an ancient race of Merryns who live underwater. The Merryn's magic powers are fading because the evil Professor has stolen four pieces of a skull that is the source of their abilities. It is up to Max and Lia to retrieve these items and save Max's father before it is too late.

The wicked pirate Cora Blackheart is on the loose again, and this time she's stolen the precious Arms of Addulis from Sumara. In an icy region of the Delta Quadrant she frees a dangerous prehistoric beast from the ice - the terrifying Jandor! Can Max and Lia battle the beast among the icebergs and foil Cora's evil plans, or will this frozen Sea Quest defeat the brave warriors?

Max and Lia's underwater adventure continues in this thrilling series by Beast Quest author Adam Blade! Max is determined to track down the evil Professor even if that means journeying into the deadly Forest of Souls. Lia knows this is a dangerous plan but she will do whatever it takes to help with the search. Max is going to need that kind of friendship when his quest leads him into battle with Manak the Manta Ray. A sting from this Robobeast's tail will paralyze any victim. Can Max defeat Manak and retrieve the third piece of the Skull of Thallos in order to save his father?

Spectron, the Sea Ghost City, is in danger! The wicked Professor has unleashed another of his menacing Robobeasts. Can Max and his friends defeat Stinger the Sea Phantom and protect the Sea Ghosts? Don't miss the other books in this series: Shredder the Spider Droid, Crusher the Creeping Terror and Mangler the Dark Menace.

Max and his friends have already fought off three terrible Robobeasts. Now they face the ultimate battle, as the evil Professor tries to use Mangler the Dark Menace to destroy the ocean worlds! Don't miss the other books in this series: Shredder the Spider Droid, Stinger the Sea Phantom and Crusher the Creeping Terror.