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
A Gentle Creature A Gentle Creature "A Gentle Creature" (), sometimes also translated as "The Meek One", is a short story by Fyodor Dostoyevsky in 1876. The piece comes with the subtitle of "A Fantastic Story", and it chronicles the relationship between a pawnbroker and a girl that frequents his shop. The story was inspired by a news report that Dostoyevsky read in April 1876 about the suicide of a seamstress. Dostoyevsky referred to it as a "meek suicide" that "keeps haunting you for a long time." The story opens with the narrator in a frenzy about an apparent tragedy that has just