Thompson Fish House, Turtle Cannery and Kraals, Maritime heritage site on Margaret Street in Key West, United States.

The Thompson Fish House, Turtle Cannery and Kraals stands at 200 Margaret Street in Key West. The complex pairs a cannery building with fenced holding pens, the kraals, set in a sheltered bay at the north end of town where live turtles were kept awaiting slaughter. The City of Key West owns the building, which now holds exhibits from the Mel Fisher Maritime Heritage Museum.

The site at 200 Margaret Street was added to the National Register of Historic Places on June 23, 1994. Its kraals were fenced holding pens in a sheltered bay at the north end of town, where turtles waited before slaughter. Canned turtle meat went to cooks for soup, and tortoiseshell became combs, boxes and inlay. The City of Key West now owns the building.

Turtle meat was canned here and sold to cooks, mainly for turtle soup, while tortoiseshell from the animals went into combs, inlay and other goods now made of plastic. The site is owned by the City of Key West and holds exhibits from the Mel Fisher Maritime Heritage Museum; a Turtle Kraals Museum once here explained dangers to sea turtles.

The site is easily accessible in downtown and can be visited most weekdays with no admission fee required. Visitors should check current opening hours in advance and wear sturdy shoes, as the grounds are partly uneven.

The kraals were specially constructed pens that allowed hundreds of live turtles to be stored until processing time. This design was crucial to the industry and made Key West an economic center for this business.