Some common and less common symptoms of boils include: 1  Redness or itching on the skin. 2  Rapid growth of swollen area. 3  Painful, red lump. 4  Pea-sized to golf ball-sized swelling. 5  Yellow or whitish pus in the center of the swelling. 6  One or more points or heads on the swelling. 7  Oozing or crusting of the swelling.
About Limpets. The limpet is a mollusk and it is a member of Acmaeidae family. The limpets can be found throughout littoral zones and they are usually found on rocks near seas or oceans. The limpets have a flat shell and they stick on the rocks by using a muscular foot which allows them to remain attached on rocks if a big wave comes.
The ones that we are primarily concerned about are the keyhole and slit limpets. These are limpet-shaped snails with a perforation on the top of the shell (keyhole limpets) or a slit on the front shell margins (slit limpets).These animals are generally carnivorous, and will eat sponges, soft corals, and other sessile animals.hese limpets are exceptionally well equipped to eat these algae. They have a radula with teeth made of a mixture of iron salts (primarily hematite) and silica (in the form of opal). This gives them a rasping organ with a value of 7 or 8 on the Mohs scale of mineral hardness.