Crinoids cling to a large sponge on a healthy coral reef near the island of Sulawesi, Indonesia. This beautiful, tropical region is home to an incredible variety of marine life.

animal animal themes animals in the wild anthozoa aquatic awe barrel sponge beauty in nature biodiversity bright cnidaria color image coral coral reef crinoid day demospongiae echinoderm ecology ecosystem environment feather stars giant barrel sponge growth habitat horizontal illuminated indo pacific ocean indonesia invertebrate large living organism majestic marine biology natural light nature no people ocean outdoors pacific ocean photography porifera reef reefscape science sea sea life sea lilies seascape sessile shining siliceous sponges southeast asia sponge sulawesi sunlight sunshine symbiotic relationship tropical climate undersea underwater vibrant wilderness wildlife xestospongia muta zoology