Squid are cephalopods of the order Teuthida, which comprises around 304 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles. Squid are strong swimmers and certain species can fly for short distances out of the water.
1 The summer semester is 10 weeks long with two 5-week mini-mesters offered as well. 2  Some courses are only available in a 10-week format. 3  The classes are accelerated and cover the same amount of content as the 16-week classes.
A semester system breaks an academic year into two terms of about 14 to 20 weeks each. Semester length varies from school to school within a range of one to three weeks. Some community colleges still use the K-12 schedule, which consist of two 18-week semesters. U.S. universities have two intakes during the fall and spring semesters.