A large vibrant multi-coloured marine Nudibranch sitting on a coral reef deep below the ocean surface

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