The video shows a group of people standing on a beach, watching a group of crabs crawling on the sand. The crabs are moving in a line, following each other, and the people are watching them from a distance. The beach is sandy, and the ocean is visible in the background. The crabs are small and brown, and they are moving in a coordinated manner. The people are standing and watching the crabs, and some of them are taking pictures or videos. The sky is clear, and the sun is setting, casting a warm glow on the scene.