"Crustal" Natural Recordings by Native Speakers
Crustal refers to the outer layer or surface of the Earth's crust, which is the layer of rock that forms the Earth's surface. The word can also refer to a layer of crust, as in crustal plate, which is a section of the Earth's lithosphere that moves relative to other sections, creating earthquakes and volcanic activity.
Crustaceans are a group of animals that have a hard outer shell, such as crabs, lobsters, shrimp, and crayfish. They have several distinct characteristics, including multiple limbs, a segmented body, and a hard exoskeleton that they must periodically shed and replace as they grow. Crustaceans are found in a wide range of aquatic environments, including oceans, freshwater lakes and rivers, and even terrestrial environments like caves and forests.
Crustaceology is the scientific study of crustaceans, which are a group of marine animals that include crabs, lobsters, shrimp, and crayfish. It involves the study of their anatomy, physiology, behavior, evolution, classification, and ecology.