Mithrax spinosissimus, commonly known as the Channel Clinging Crab is a species of crab found in the western Atlantic Ocean and the Caribbean Sea. Here are some interesting facts about Channel Clinging Crab;

1. Appearance: The Channel Clinging Crab has a compact and flattened body with a round carapace (shell) that can reach a maximum width of around 2.5 inches (6.5 centimeters). It has a redish-brown color, often with darker brown markings. The carapace is covered with numerous sharp spines, giving it a spiky appearance.

2. Habitat: Channel Clinging Crab is commonly found in shallow coastal waters and rocky reef environments. It prefers areas with crevices, caves, and coral formations, where it can hide and find protection.

3. Feeding Behavior: The Channel Clinging Crab is omnivorous and feeds on a variety of food sources. It primarily consumes algae, detritus, and small invertebrates. It uses its sharp pincers to scrape algae from rocks and to capture small prey items.

4. Behavior: As its name suggests, the Channel Clinging Crab is a skilled climber and has specialized appendages on its walking legs that allow it to cling tightly to rocks and other substrates. It is mainly active during the night and spends much of its time foraging for food.

5. Defense Mechanisms: The spines covering the carapace of the Channel Clinging Crab serve as a defense mechanism against potential predators. When threatened, it can tuck its body tightly into crevices and use its spines to deter predators or make it difficult for them to extract it from its hiding place.

6. Distribution: Channel Clinging Crab is primarily found in the western Atlantic Ocean, ranging from the southeastern United States to the northern coast of South America, including the Caribbean Sea. It is commonly encountered in areas with rocky or coral reef habitats.