Palinuridae is a family of marine crustaceans commonly known as spiny lobsters. They are characterized by their long antennae and lack of large claws, which distinguishes them from true lobsters. Spiny lobsters are found in warm seas around the world and are known for their hard exoskeletons and vibrant colors. These crustaceans are primarily nocturnal and are often found hiding in crevices or under rocks during the day. They are important both ecologically and economically, serving as a food source for various marine animals and being harvested for human consumption in many coastal regions.