Kalmar "Family Balaenidae" tana nufin dangin dabbobi masu shayarwa na ruwa waɗanda suka haɗa da nau'in whales waɗanda aka fi sani da "Whales dama." Waɗannan kifayen kifi manya ne kuma suna tafiyar hawainiya, suna da kifin jiki, babban kai, da hoho mai siffar V. Su ne masu ciyar da tacewa, suna amfani da faranti na baleen a cikin bakunansu don ƙetare ƙananan ganima, kamar krill da copepods, daga ruwa. Iyalin Balaenidae sun haɗa da nau'ikan nau'ikan kifayen dama guda huɗu: Arewacin tekun Atlantika na dama, tekun tekun Pacific na dama, tekun dama na kudu, da kuma bowhead whale.