側鰓科

Pleurobranchaea meckelii
側鰓科（學名：Pleurobranchidae），亦作側鰓海牛科，是分類學上海蛞蝓的一個科、海洋腹足綱軟體動物側鰓類支序的成員。過往是背楯目之下的一個科TaiBIF，現時是裸側類支序的成員。
側鰓科的物種有一個突出的外套膜，其內殼在成年後會退化或完全消失。已經觀察到一些成年物種以海鞘類為食。側鰓科物種的幼蟲可以是浮游性的（以浮游生物為食）、營養性的（從卵黃中獲取營養）或直接發育的。
許多物種從其豐富的腺體外套膜中分泌出分泌物，作為對天敵的化學防禦。甚至有報道說能產生硫酸。

**分類**
直到2005年，這個科都被置於背楯亞目中。然而，在“Bouchet和Rocroi 對腹足目的分類”（2005年）中，側鰓科被置於側鰓總科中，是側鰓類（與裸鰓類是姐妹類）的惟一一科，是裸側類的一部分。
以下為本科之下的屬和物種WoRMS_535693：- Berthellina
** Berthellina citrina (Ruppell et Leuckart, 1828)- Pleurobranchus
** Pleurobranchus forskalii (Ruppell et Leuckart, 1828)
** 明月側鰓 Euselenops luniceps small|(Cuvier, 1817)

**Pleurobranchinae亞科**
Bathyberthella
**Bathyberthella antarctica  Willan and Bertsch, 1987 - 側鰓海蛞蝓屬 Berthella de Blainville, 1824
**Berthella africana  Pruvot-Fol, 1953 
**Berthella agassizi MacFarland, 1909 
**Berthella americana  A. E. Verrill, 1885 
**Berthella aurantiaca  Risso, 1818 
**Berthella caledonica  Dall, 1900  
**Berthella californica  Dall, 1900  California sidegill slug
**Berthella canariensis  Cervera, J.L., T.M. Gosliner, J.C. García-Gómez & J. Ortea, 2000 
**Berthella elongata  Cantraine, 1835 
** 馬丁側鰓海蛞蝓 Berthella martensi  Pilsbry, 1896 
**Berthella medietas  R. Burn, 1962 
**Berthella ocellata delle Chiaje, 1830 
**Berthella ornata  T.F. Cheeseman, 1878 
**Berthella patagonica  d'Orbigny, 1837 
**Berthella platei  Bergh, 1898 
**Berthella plumula Montagu, 1803 
**Berthella sideralis  Lovén, 1846 
**Berthella stellata  Risso, 1826 
**Berthella strongi  MacFarland, 1966 
**Berthella tamiu  Ev. Marcus, 1984 
**Berthella tupala  Er. Marcus, 1957 
*Berthellina  Gardiner, 1936 
**Berthellina amarillus  Mattox, 1953 
**Berthellina americanus  Verrill, 1885 
**Berthellina circularis  Mörch, 1863 
**Berthellina citrina  Rüppell & Leuckart, 1828  (synonym of Gymnotoplax citrina Er. Marcus, 1957 )
**Berthellina delicata  W.H. Pease, 1861 
**Berthellina edwardsi Vayssière, 1897 
**Berthellina engeli  Gardiner, 1936 
**Berthellina granulata (Krauss, 1848)
**Berthellina ilisima  Marcus, Er. & Ev. Marcus, 1967 
**Berthellina quadridens  Mörch, 1863  (junior synonym of Gymnotoplax quadridens)- Boreoberthella Martynov & Schrödl, 2009
*Bouvieria  Vayssière, 1896 : synonym of Berthella Blainville, 1824
**Bouvieria auriantiaca Risso, 1813 
**Bouvieria ocellata  S. delle Chiaje, 1828 
**Bouvieria perforata   Philippi, 1844 
*Gigantonotum: synonym of Berthella Blainville, 1824
**Gigantonotum album  Lin, G. & S. Tchang, 1965 
*Gymnotoplax  Pilsbry, 1896 : synonym of Berthella Blainville, 1824
**Gymnotoplax citrina Er. Marcus, 1957 
**Gymnotoplax engeli  Gardiner, 1936 
**Gymnotoplax quadridens
*Oscanius  Leach, 1847 : synonym of Pleurobranchus Cuvier, 1804
**Oscanius tuberculatus Meckel, 1808 
*Parabathyberthella: synonym of Bathyberthella Willan, 1983
**Parabathyberthella eltanini  Dell, 1990 
**Parabathyberthella orcadensis  Talavera, F.G., J.C. García-Gómez, J.S. Troncoso & J.L. Cervera, 1994 
*Pleurehdera Ev. Marcus & Er. Marcus, 1970
**Pleurehdera haraldi Ev. Marcus & Er. Marcus, 1970 
*Pleurobranchus  Cuvier, 1805 
*Polictenidia: synonym of Bathyberthella Willan, 1983
**Polictenidia tomasi  Talavera, F.G., J.S. Troncoso, J.L. Cervera & J.C. García-Gómez, 1996 
*Susania: synonym of Pleurobranchus Cuvier, 1804
**Susania testudinaria  Cantraine, F.J., 1840  (synonym of Pleurobranchus testudinarius)
*Tomthompsonia
**Tomthompsonia antarctica  Thiele, 1912 

**無殼側鰓亞科**
無殼側鰓亞科（Pleurobranchaeinae）現時被提升為無殼側鰓科（Pleurobranchaeidae Pilsbry, 1896）。

**參考資料**

**外部連結**
cite news |url=https://www.yahoo.com/finance/video/scientists-just-collected-mysterious-purple-160836944.html |title=Scientists just collected a mysterious 'purple orb' at the bottom of the ocean, but no one could anticipate what happened next |work=Business Insider |format=Video |date=July 30, 2016 |accessdate=July 30, 2016 -  Richard C. Willan, Description of a New Pleurobranch (Opisthobranchia, Notaspidea) from Antarctic with a review of Notaspideans from South Polar Seas; The Veliger 29 (3), 1987 p. 292-302 date=20180808044024