Bonnethead tend to be larger than males. The Greek word "sphyrna" translates as "hammer", referring to the shape of this shark's head; "tiburo" is the Taino word for shark. Bonnethead sharks are the only sharks known to exhibit sexual dimorphism in the morphology of the head. Adult females have a broadly rounded head, whereas males possess a distinct bulge along the anterior margin of the cephalofoil. This bulge is formed by the elongation of the rostral cartilages of the males at the onset of sexual maturity and corresponds temporally with the elongation of the clasper cartilages. The pectoral fins on most
A Creature I Don't Know A Creature I Don't Know A Creature I Don't Know is the third studio album by British singer-songwriter Laura Marling, released on 9 September 2011. The album was announced in June 2011, along with a preview of a new song, featured in a video posted on Laura Marling's official YouTube channel. The first track from the album to receive radio airplay was "Sophia", on 25 July 2011 on BBC Radio 1. The "When The Bell Tolls" tour of America, Canada and England was announced on 25 July, and took place in September and October 2011 to support the album. On