Bonnethead fish control pitching (up-and-down motion of the body), yawing (the side-to-side motion), and rolling. Most hammerhead sharks do not yaw or roll and achieve pitch using their cephalofoils. The smaller cephalofoil of a bonnethead shark is not as successful, so they have to rely on the combination of cephalofoils and their large pectoral fins for most of their motility. Compared to other hammerheads, bonnethead sharks have larger and more developed pectoral fins and are the only species of hammerhead to actively use pectoral fins for swimming. Using data from mtDNA analysis, scientist have found that evolution of hammerhead sharks probably
Creature Catalogue found in the Basic, Expert, Companion and Master rulesets. Each creature in the book is illustrated, and the entries in the book are ordered by type rather than just alphabetically. This includes six sections: Animals (including giant and extinct varieties), Conjurations (such as elementals and golems), Humanoids, Lowlife (including insects, plants, and jellies and slimes), Monsters (a catch-all category), and Undead. The Intelligence score of each monster is listed with the rest of its statistics. The book also includes a comprehensive index of all monsters by environment, and Frank Mentzer's guide on how to balance encounters according to the levels