“Two divers had just been scuba diving at Souza Rock, two miles off Morro Bay in Central California.  They were merely passing time before the next scuba dive by snorkeling among sardines and other life in the area. They had cameras and a safety rope, and hoped to get shots of humpbacks in the distance.  “When we got in, the whales were about a quarter of a mile away.” Humpback whales feed on shrimp-like krill and small fish, which are ingested in large volumes with sea water. The water is expelled through baleen plates.  In this case the whales were clearly after the sardines, using vertical lunge-feeding techniques to catch the fish.  But humpback whales weigh up to 40 tons and the whales…”

Source: Grindtv.com