Primarily, I am now doing a phylogeography of tide-pool copepod (Tigriopus japonicus) in Taiwan with my colleagues. As far as I know only copepod from Tigriopus spp. could survive in the tide-pools but during my sampling in Penghu Islands and Green Island, we also found this species in the tide-pools that we are not sure that it is Tigriopus japonicus.
The first photo was the unknown copepod species and the second was the Tigriopus japonicus.
Best,
Steve