ARKive, which proclaims itself "Nature's Media Vault," preserving images of endangered species, holds its second annual "Fill the Ark in Illinois" Chicago fundraiser at 6 p.m. Monday at the Racquet Club of Chicago, 1365 N. Dearborn Parkway. Featured guests include oceanographer Dr. Sylvia Earle and National Geographic editor Kathy Moran. Tickets are $500 and can be purchased by calling 630-752-9661 or emailing