This video showcases a vibrant underwater scene. The main focus is on a sea urchin, which is orange in color and covered in white spikes. The sea urchin is seen moving slowly through the water, surrounded by a group of purple sea urchins. These sea urchins are also covered in spikes and are densely packed together, creating a striking contrast with the orange sea urchin. The water is clear, allowing for a detailed view of the sea urchins and their movements. The video captures the serene and slow-paced nature of underwater life, with the sea urchins gently swaying with the current.