Sili (Kisayansi: Phocidae) ni familia ya mamalia wenye mikono na miguu inayofanana na mapezi ya samaki. Familia Phocidae Nusufamilia Monachinae Kabila Monachini Sili-mtawa wa Hawaii, Monachus schauinslandi (Hawaiian Monk Seal) Sili-mtawa wa Mediteranea, Monachus monachus (Mediterranean Monk Seal) †Sili-mtawa wa Karibi, Monachus tropicalis (~1950) (Caribbean Monk Seal) †Sili Koo-refu, Acrophoca longirostris (Swan-necked Seal) Kabila Miroungini Tembo-bahari Kaskazi, Mirounga angustirostris (Northern Elephant Seal) Tembo-bahari Kusi, Mirounga leonina (Southern Elephant Seal) Kabila Lobodontini Sili wa Ross, Ommatophoca rossi (Ross Seal) Sili Mlakaa, Lobodon carcinophagus (Crabeater Seal) Chui-bahari, Hydrurga leptonyx (Leopard Seal) Sili wa Weddell, Leptonychotes weddellii (Weddell Seal) Nusufamilia Phocinae Sungura-bahari, Erignathus barbatus (Bearded Seal) Sili-kifuniko, Cystophora cristata (Hooded Seal) Kabila Phocini Sili wa Kawaida Phoca vitulina (Common Seal) Sili Madoa or Larga Seal, Phoca largha (Spotted Seal) Sili Madoa-mapete, Pusa hispida (Ringed Seal) Sili wa Baikal, Pusa sibirica (Baikal Seal) Sili wa Kaspi, Pusa caspica (Caspian Seal) Sili wa Greenland, Pagophilus groenlandica (Harp Seal) Sili-milia, Histriophoca fasciata (Ribbon Seal) Sili Kijivu, Halichoerus grypus (Grey Seal) Sungura-bahari Sili kijivu Sili milia Chui-bahari Sili wa Weddell Sili mlakaa Tembo-bahari kaskazi Tembo-bahari kusi Sili-mtawa wa Mediteranea Sili-mtawa wa Hawaii Sili wa Ross Sili wa Greenland Sili madoa Sili wa Kaspi Sili madoa-mapete Sili wa Baikal