It a straight, white sea snake with red eyes and green areas indicating the locations of the spikes. It also has a spouted mouth.
Snorkel Snakes first appear in Yoshi's Story, located in underwater areas.
Snorkel Snake attacks by its spiky body (its green spots) when it attempts to attack Yoshi. Snorkel Snake also swims around Yoshi to make him an effective obstacle to the Yoshis. However, its body is not long enough to make a full circle and thus, Yoshi can always swim out of the small gap when he has the chance.