The biggest animal in the ocean, and in the world, is the blue whale (Balaenoptera musculus), a sleek, light-colored giant. Blue whales are thought to be the largest animal ever to live on the Earth. They reach lengths up to about 100 feet and weights of an amazing 100-150 tons.
You get a pimple when a pore in your skin gets clogged, usually with dead skin cells. Sometimes bacteria get trapped inside the pore, too, causing the area to become red and swollen. Cystic acne happens when this infection goes deep into your skin, creating a red, tender bump that's full of pus. It may hurt or itch. If a cyst bursts, the infection can spread, causing more breakouts.
Primary causes of acne. 1  Excess sebum, or oil gland, production (influenced by hormones). 2  Skin cells that shed become abnormally sticky and accumulate, or clog up, in the hair follicle (influenced by hormones). 3  Increased number of the acne-causing bacterium Propionbacterium acnes, or P. acnes. 4  Skin inflammation. more information...