a close-up view of a fish swimming underwater amidst aquatic vegetation

fish underwater aquatic nature wildlife marine swimming habitat ecosystem gills fins scales blue water ocean river sea environment fauna biodiversity species aquaticlife tranquil natural serene exploration depth beauty aquaticplants colors movement fluid conservation adventure swimmingfish freshwater saltwater aquaticenvironment underwaterphotography fishspecies naturalhabitat wildlifephotography marinebiology oceanlife