approximately how many species of sponge live in fresh water environments
Marine life Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry. The shapes of their bodies are adapted for maximal efficiency of water flow through the central cavity, where it deposits nutrients, and leaves through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile aquatic animals. Although there are freshwater species, the great majority are marine (salt water) species, ranging from tidal zones to depths exceeding 8,800 m (5.5 mi).
List of SpongeBob SquarePants episodes Since its debut on May 1, 1999,[3] SpongeBob SquarePants has broadcast 234 episodes, and its eleventh season premiered on June 24, 2017. The SpongeBob SquarePants Movie, a feature-length film, was released in theaters on November 19, 2004 and grossed over US$140 million worldwide.[4] Atlantis SquarePantis, a television film guest starring David Bowie, debuted as part of the fifth season.[5] In 2009, Nickelodeon celebrated the show's tenth anniversary with Square Roots: The Story of SpongeBob SquarePants and SpongeBob's Truth or Square.[6][7] The SpongeBob Movie: Sponge Out of Water, a stand-alone sequel, was released in theaters on February 6, 2015 and grossed over US$324 million worldwide.[8]