アメリカ自然史博物館のインスタグラム(amnh) - 11月17日 04時51分

About 1,000 species of brightly colored nemertean worms—also called ribbon worms—inhabit the world’s oceans. One specimen reached an extraordinary length of about 177 feet (54 meters). But most are less than 10 inches (25 centimeters) long. Most nemertean (ribbon) worms are active predators. Some emit sticky toxic secretions to immobilize prey, which includes annelid (segmented) worms, mollusks, crustaceans—and other nemerteans. This illustration comes from his 1895 Die Nemertinen des Golfes von Neapel und der Angrenzenden Meeres-Abschnitte.

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