The video captures a close-up view of two clownfish, one larger and one smaller, swimming in and out of the white tentacles of a sea anemone. The larger clownfish is predominantly red with three white stripes bordered by black, while the smaller one has similar coloring but with a single stripe. The sea anemone's tentacles are waving gently in the water, creating a serene underwater scene. The fish move gracefully, occasionally brushing against the tentacles, which appear to be their home.