title: Martensia martensi
text: # Martensia martensi
  
  Martensia martensi is a species of amphipod crustacean, and the only species in the genus Martensia. It occurs in waters around Svalbard at depths of 37–95 metres (121–312 ft).
  
  ## Description
  
  M. martensi is only known from four specimens collected in 1861 in two fjords on the island of Spitsbergen – Kongsfjorden and Isfjorden. They are all immature, and measure 6–8 millimetres (0.24–0.31 in) long.
  
  ## Taxonomy
  
  A. Goës described Lysianassa martensi as a new species in 1866. It was redescribed in 1968, and tentatively assigned to the genus Uristes. In 1991, J. Laurens Barnard and G. S. Karaman erected a new genus, Martensia, for this species alone, and the genus remains monotypic.
  
  