This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Jipijka'm (Mi'kmaq)
Jipijka'm is a great horned serpent, common to the legends of most Algonquian tribes. It is said to lurk in lakes and eat humans. Since it has only one horn according to most Mi'kmaq stories, it is sometimes called the Unicorn Serpent in English. Its horn is usually described as red and yellow and has powerful magical qualities.
Also known as Jipijka’m, Chepechcalm and Tcipitckaam. The name was chosen as the Mi'kmaq are the original inhabitants of Nova Scotia. The species name derives from Latin words "palaeo" and "fluvialis", meaning "ancient" and "river" respectively, chosen to reflect the animal's likely habitat.