Click on the "Photography" section above to see pdf photos of recent expeditions

Although based in Washington, DC, Mark and Diane spend at least four months a year conducting field research in Florida and the Florida Keys, with another two months spent on ongoing projects in the Bahamas, Belize, and Panama.

Chief Scientists on large-scale scuba, submersible, and oceanographic/biodiversity expeditions during the past two decades (>150,000 curated specimens) targeting habitats of exceptional diversity or areas in danger of biodegradation. These include: Southern California and the offshore Channel Islands, Pacific coast of Baja California, Sea of Cortez, Galapagos Islands, Mediterranean (Costa Brava, Balearic Islands), Morocco, Western Sahara, Seychelles Archipelago, Indian Ocean, Australian Great Barrier Reef, Hawaiian Islands, Palau, Guam, Tahiti, Cook Islands, American Samoa, Great Astrolabe Reef, Fiji, Solomon Islands, Papua New Guinea, Pacific Panama (Archipelago de las Perlas, Gulf of Panama, Gulf of Chiriqui, Coiba National Park) and Caribbean Panama (San Blas Islands, Isla Escudo de Veraguas, Bocas del Toro), Honduras, Belize Barrier Reef, Mexican Yucatan, Cozumel, Chinchoro Bank, South Florida & Keys, Indian River Lagoon System, Bermuda, Bahamas, Turks & Caicos, Grand Cayman, Misteriosa Bank, Jamaica, Navassa Island, Dominican Republic, Puerto Rico, St. Croix, St. Thomas, Anguilla, St. Barthelemy, St. Martens, Saba Bank, Bonaire, Antigua, Montserrat, Jost van Dyke, Guadeloupe, Martinique, St. Lucia, St. Vincent, Grenadines, Grenada, and French Guiana.