Beast Quest: Narga the Sea Monster by Adam Blade

The Beast swooped down towards them, jaws agape. Odora leaped out of the way, catching a glimpse of rotten fangs and a flickering, forked tongue. The vicious jaws grabbed her brother by the head and lifted him clear of the ship. Dako kicked out and pounded his fists against the Beast's scaly neck, but he couldn't free himself.