视频中展示的是三只鹈鹕在水中游泳的场景，它们的羽毛是白色的，嘴巴是橙色的，嘴巴下面有一个大大的喉囊，它们在水中游动着，其中一只鹈鹕将头伸进水里，然后又抬起头来，另外两只鹈鹕则在它的旁边游动着，水面泛起阵阵涟漪。
The video shows a group of pelicans swimming in a body of water. The pelicans have white feathers and long, pinkish-orange beaks. They are moving gracefully through the water, with some of them dipping their heads into the water, possibly to feed. The water appears to be calm, with gentle ripples around the birds as they swim. The scene captures the natural behavior of these large water birds in their aquatic environment.
Three pelicans are swimming in the water, with their heads close together. The pelican in the front starts to move to the right, followed by the other two. The pelican in the back dips its head into the water and then raises it back up. The pelican continues to swim forward, moving away from the group.