Tentacles, people started giggling. What can I say? I love sci fi action young adult novels.
Tentacles is actually the sequel to Cryptid Hunters, which my library doesn't have. It was actually a pleasure to jump into the second book in a series, because all the exposition from the first book was covered in the first few pages of this one. Tentacles has a lot of fun plot twists and evil characters. I made a few incorrect guesses about who would be the bad guy; that's always fun.
There is a scene near the end which involves sperm whales and giant squid that really activated my imagination and made me think on a bigger scope. I love any book that does that. Time to add Cryptid Hunters to the wishlist.