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
What Makes a Battle What Makes a Battle What Makes a Battle was a propaganda short produced by the US Army Pictoral Service in 1944. It documents the taking of the Marshall Islands while also encouraging increased war production. The film opens with the narrator asking "What makes a battle?" while the camera is focusing on shipments of industrial transports, "This is what it takes to make a battle." This statement sets up the dual nature of the entire film. War supplies are pouring in from every part of the country, from every type of American "Republican and Democrat, white and colored." Industrial production