Emperor Shrimp are among the most beautiful species of shrimp in the ocean. Fortunately, they are fairly common and easily found in Southeast Asia. They are a commensal shrimp and live almost exclusively in association with echinoderms (sea stars, sea cucumbers, and less frequently, sea urchins). Both the shrimp and its host echinoderm benefit from this mutualism. In this image, the emperor shrimp is residing on a large sea cucumber.
Lembeh Strait, North Sulawesi, Indonesia