Kalmar "Family Gigartinaceae" tana nufin dangin taxonomic na jan algae, wanda kuma aka sani da ciyawa. Mambobin wannan iyali suna da salon salula da yawa kuma yawanci suna da ƙuƙumman ɓangarorin ɓangarorin da ke tsiro daga tsakiya. Ana samun su a cikin yanayin ruwa a duniya, kuma ana amfani da wasu nau'in a cikin masana'antar abinci a matsayin tushen carrageenan, wakili mai kauri.
