mating halgerda nudibranchs in lembeh strait

acidification adventure ampat animals beautiful behavior bigfin biodiversity biology calm change climate colorful competition conservation coral corals crustacean cup diving ecology ecosystem edge embryos environment evolution extraordinary fish habitat healthy indonesia island landscape lembeh life marine mating natural nature niche nudibranch ocean pacific part peaceful raja reef relaxing remote reproduction research resort scenery scenic science scuba sea seascape snorkeling species sport spots strait sulawesi tourism travel triangle tropical tropics underwater vacation water western wild wilderness wildlife