Kalmar "Family Spheniscidae" tana nufin rarrabuwa taxonomic na dangin tsuntsaye marasa tashi da aka fi sani da penguins. Kalmar "Spheniscidae" ta samo asali ne daga kalmar Helenanci "sphen" wanda ke nufin "wedge" kuma yana nufin siffar jikin penguin. Iyalin Spheniscidae sun haɗa da nau'in penguin guda 18, waɗanda duk ana samun su a Kudancin Kudancin, musamman a Antarctica, Afirka ta Kudu, New Zealand, Australia, da Kudancin Amurka.