Malacology Malacology Malacology is the branch of invertebrate zoology that deals with the study of the Mollusca (mollusks or molluscs), the second-largest phylum of animals in terms of described species after the arthropods. Mollusks include snails and slugs, clams, octopus and squid, and numerous other kinds, many of which have shells. One division of malacology, conchology, is devoted to the study of mollusk shells. Malacology derives from Greek , "malakos", "soft"; and , "-logia". Fields within malacological research include taxonomy, ecology and evolution. Applied malacology studies medical, veterinary, and agricultural applications, for example mollusks as vectors of disease, as in schistosomiasis.
Islamic schools and branches Tayyibi Ismailis are called Bohras and split between Da'udi Bohras, Sulaymani Bohras, and Alavi Bohras. Similarly, Kharijites were initially divided into five major branches: Sufris, Azariqa, Najdat, Adjarites and Ibadis. Of these, Ibadis are the only surviving branch of Kharijites. In addition to the aforementioned groups, new schools of thought and movements like Quranist Muslims, and African American Muslims later emerged independently. Sunni Muslims are the largest denomination of Islam and are known as "Ahl as-Sunnah wa'l-Jamā'h" or simply as "Ahl as-Sunnah". The word "Sunni" comes from the word "sunnah", which means the teachings and actions or examples of the