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.
The summer semester, which is usually six or seven weeks term usually offers a reduced range of classes to choose from. UMass Bostonâs summer sessions are summer semesters. With the trimester system, the academic school year is broken into three terms, each about twelve or thirteen weeks long. Proponents of the trimester system usually offer terms during the fall, winter and spring.