. . . . . . . . . "Metacarcinus gracilis" . . "Larus occidentalis" . . "sea-kangaroo. 2018. Metacarcinus gracilis interaction->preyed upon by Larus occidentalis. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/9823520> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .