section_heading: Ugrožene vrste
paragraph_text: 250px|mini|lijevo|Gušter [[Pholidoscelis polops, snimljen na Protestant Cayu.]] Endemski gušter Pholidoscelis polops nekoć je lutao Saint Croixom i svim obližnjim otocima i otočićima, ali sada se nalazi samo na Protestant Cayu i Green Caysima u blizini sjeverne obale Saint Croixa.<ref>Stallings, Douglas (2009). Fodor’s Caribbean. Fodor's Travel Publications. Page 26. ISBN 9781400019427.<ref>Sheviak, Charles J. (1990). Ecosystem Management: Rare Species and Significant Habitats : Proceedings of the 15th Annual Natural Areas Conference. University of the State of New York. Page 154.