Handheld close-up view of a solitary garden eel in a giant fish tank, isolated and controlled aquarium environment

handheld closeup view solitary garden eel fish tank isolated controlled aquarium environment marine aquatic underwater species unique behavior mesmerizing captivating slender body sandy substrate burrowing feeding delicate curious observation tranquility serene habitat exhibit beauty isolation exploration world captivity interaction peaceful adaptation sight conservation educational immersive experience existence ecosystem biodiversity