purple nudibranch

across animals biology bullocki colorful colors conservation coral crawls diverse diversity diving ecosystem environment fire gastropods habitat hypselodoris indonesia island komodo life like macro marine most natural nature need niche not nudibranch nudibranchs ocean pacific protective purple reef relatives research science seascape shell shelled shrimp small snorkeling species spines spiny symbiosis symbiotic their therefore tourism toxic travel underwater urchin venomous wildlife