The Sedentaria were from two similar habitats in the Gulf of Elat and the Mediterranean coast of Israel. These were porous rocks of
Dendropoma spp. tubes encrusted on the seaward margins of intertidal platforms. The Sabellidae and Serpulidae have been treated elsewhere. Eleven remaining families, less abundant, are discussed here: Spionidae, Cirratulidae, Orbiniidae, Opheliidae, Arenicolidae, Capitellidae and Terebellidae (both habitats); Maldanidae and Sabellariidae (Mediterranean habitat); and Scalibregmidae and Chaetopteridae (Gulf of Elat). Of 15 species from the Mediterranean habitat, 12 are new records, while of 11 Gulf of Elat species, eight are new records for the Gulf of Elat and for the Red Sea.
Branchiomaldane cf.
vincenti, a new record in both habitats, is particularly abundant in the Mediterranean habitat.
Mesochaetopterus crypticus n. sp.,
Ctenodrilus paucidentatus n. sp., and
Zeppelina nova n. sp., are described from the Gulf of Elat habitat and
Mediomastus cirripes n. sp. from the Mediterranean habitat. The development of taxonomic characters with increasing age is considered for several species.
