Large soft body sea creature slides across a underwater reef structure lit up by a scuba divers light

scuba scuba diving diver snorkeling underwater great barrier reef tropical destination tropics zoo marine conservation coral coral bleaching marine park animal encounter fish pacific nature wildlife water activity ecosystem nudibranch creature sea slug gastropod animal behaviour colourful blue planet aquarium collector fish keeper artistic unique 4k resolution snoot torch underwater light night diving vibrant sea creature flabellina purple fabelina mass gathering multiple research documentary lighting sponges behavior