A video from Sandefjord in Norway, showing schools of mackerel feeding on plankton. The plankton flows in from the ocean along with hundreds of giant Lions Mane Jellyfish (Brandmand). Small Whittings (Hvilling) hide between the jellyfishes tentacles, protecting them from predators, but also making them very hard to photograph, since they always stay on the opposite side of the jellyfish from where you are as a photographer.
