Saving a sea monster

This title is part of Bug Club, the first whole-school reading programme to combine books with an online reading world to teach today's children to read. In this Year 5 Blue B (NC level 4a) fiction novel ... A sea monster at the RSPCB is dying. The only way it can survive is for Dr Fielding to perform an operation on its brain... but she can't get close to the monster as it has a massive stinger full of deadly venom. Can Ulf remove the monster's deadly venom without being stung?