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Notarchus indicus
Schweigger, 1820
 
Notarchus indicus
Maximum size:  25 mm.

Identification:  This sea hare has fine papillae, some with white tips. The body is translucent cream to red-brown with darker spots. The parapodia are fused except for an anterior aperture.

Natural history:  Notarchus indicus is a moderately rare species found in rocky habitats and Halimeda kanaloana beds at depths of < 1 to 110 m (< 3 to 328 ft). When disturbed, it swims backward via "jet propulsion" by forcefully expelling water from its mantle cavity through the anterior aperture. A 25 mm animal laid a tangled, orange-brown egg string that hatched in about eight days in the laboratory.

Distribution:  Big Island, Maui, Oahu, Kauai, Midway and Kure: widely distributed in the Indo-Pacific.

Taxonomic notes:  It was first recorded in Hawaii from off Hale'iwa, Oahu by Terry Gosliner & Gary Williams in Oct. 1973 (dredged).

Photo:  CP: about 25 mm: found by PF; Airport Beach, Maui; March 22, 2003.

Observations and comments:

Note 1:  ( )
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