Staffan Widstrand / Jungle cat (Felis chaus) at night, Kanha National Park and Tiger Reserve, Madhya Pradesh, India

Fabio Pupin / Red swamp crayfish (Procambarus clarcki), invasive species, captive, Italy, July.

Eric Baccega / Shoebill stork (Balaeniceps rex) in the swamps of Mabamba, Lake Victoria, Uganda, February.

Sven Zacek / Bog surrounding river in morning light. Emajoe Suursoo Nature Reserve, Tartumaa, Estonia. October 2015.

Juergen & Christine Sohns / Swamp Wallaby (Wallabia bicolor) mother and joey, Mount Lofty, South Australia, Australia

Eladio Fernandez / Cienaga de Zapata Swamp at sunset, UNESCO Biosphere Reserve, Cuba, January 2009.

Ingo Arndt / Mangrove (Avicennia sp) and Dwarf Cypress (Taxodium sp) trees surrounding water channel, Everglades National Park, Florida

Ingo Arndt / Dwarf Cypress (Taxodium sp) trees in grassland, Everglades National Park, Florida

Ingo Arndt / Bald Cypress (Taxodium distichum) trees in swamp with epiphytes and ferns, Everglades National Park, Florida

Ingo Arndt / Bald Cypress (Taxodium distichum) trees in swamp with epiphytes and ferns, Everglades National Park, Florida

Cheryl-Samantha Owen / African elephant (Loxodonta africana) calf covered in mud, Engong Narok swamp, Amboseli National Park, Kenya.

Mark MacEwen / Snares island crested penguin (Eudyptes robustus) colony in forest, Snares Island, New Zealand.