Interest like beauty is in the eye of the “beholder”. Many guests, including James, take pictures of these banana slugs, which are often bright yellow (giving rise to the banana name) although they may also be green, brown, or white. Some slugs have black spots which may be so extensive as to make the animal look almost solid black. The Pacific banana slug is the second-largest species of terrestrial slug in the world, growing up to 25 centimetres (9.8 in) long, and weights of 115 grams (4.1 ounces). Banana slugs can move at 6 1⁄2 inches (17 cm) per minute.