Diverse Opisthobranchs and Polyclad Flatworms in Houwan,Kenting National Park, Southern Taiwan

This study reports on a reef site with diverse sea slugs and polyclad flatworms in Houwan, Kenting National Park, southern Taiwan. From February 2013 to May 2015, 70 species of opisthobranchs and 15 species of polyclads were recorded on a reef with a 20 x 20-m area and at 15 m in depth. This site is adjacent to the outlet of Paoli Stream, which nourishes the local benthos with potential food for various sea slugs. When the water gets warmer in February, the sea slugs may aggregate in this area for foraging and mating. When the sea is calm from February to May, Houwan can be an ideal site to study the life history and behaviors of sea slugs.