Wondering if the post office is open on July 4, and if the letter carrier will deliver the mail on Saturday? Although most retail stores and restaurants will be open on Independence Day, the U.S. Postal Service will closed down for the day.
Leeches are famous as blood-suckers. The species that feed on blood have special chemicals in their saliva that prevents blood-clotting. Many blood-feeding leeches attack only fish, a few attack any vertebrate (including people), and a few are specialists on another group of animals, like turtles or waterbirds. There are also lots of leech species that don't suck blood. They are predators, eating worms, snails, aquatic insects, and other invertebrates.
The majority of leeches thrive in freshwater environments, though some species can be found on land and in the sea, too. Of the 700 different species of leeches, 100 are marine, 90 are terrestrial and the remaining 510 prefer habitats like your lake or pond. One of the more common leeches found in North America is the Freshwater Leech or North American Leech. This brownish-green worm with black and red spots grows to about 2 inches long and lives in lakes, marshes and slow-moving streams.