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The Hellenic Trench is a hemispherical-scale long narrow depression in the Ionian Sea. The hadal zone of the Hellenic trench is roughly to 5,300 metres (17,388 feet) deep. The names of the three major parts of the Hellenic trench are: Matapan Deep System or Matapan–Vavilov Deep, roughly , the Kithera–Antikithera System, , and the Zakinthos–Strofadhes system, . The Calypso Deep, located in the Hellenic Trench, is roughly deep and is the deepest point in the Mediterranean Sea. The region of the Hellenic trench is an ecosystem to sperm whales and other aquatic life. The trench has been used by marine biologists to study the behaviour of various aquatic species. This is the trench where several earthquakes, including the 365 Crete earthquake, occurred. ==See also== * Extremes on Earth 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hellenic Trench」の詳細全文を読む スポンサード リンク
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