1 Pain: Persistent mouth pain is another common oral cancer sign. 2  A lump or thickening in the cheek. 3  A white or red patch on the gums, tongue, tonsil, or lining of the mouth. 4  A sore throat or feeling that something is caught in the throat that does not go away.
Blue whales are the largest predator to ever inhabit this planet, though it is thought to feed almost exclusively on tiny, shrimp-like creatures called euphausiids or krill. Feeding is usually at depths less than 100 m; harpooned animals have dived as deep as 500 m.lue whales, Balaenoptera musculus (Linnaeus, 1758), like all rorquals (Family Balaenopteridae, the family that includes the blue whale, Bryde's whale, fin whale, humpback whale, minke whale, and sei whale), are long, slender whales that are much more streamlined than other large whales.
Blue whaleâs also have baleen (the whale shark is also a filter feeder but doesnât have baleen). The shape of the whale sharkâs fins are also very different to that of a blue whale. The blue whale isnât patterned like the whale shark. The whale shark also has a smaller range than the blue whale in terms of habitat. Blue whales can also swim very fast in short bursts but whale sharks are slow swimmers. These are some of the main differences but there are a lot more.