Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Nature Production / Papuan Jellyfish (Mastigias papua) Japan

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), native to southern Pacific Ocean

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua) pair near the surface, Palau

Juergen Freund / Snorkeler with a Papuan Jellyfish (Mastigias papua) and salps, Camarines Sur, Luzon, Philippines 2008

Juergen Freund / Papuan Jellyfish (Mastigias papua) Camarines Sur, Luzon, Philippines 2008

Juergen Freund / Papuan Jellyfish (Mastigias papua) Camarines Sur, Luzon, Philippines 2008

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Japan

Doug Perrine / Papuan jellyfish {Mastigias papua} Bikini atoll, Marshall Is, Micronesia

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Norbert Wu / Papuan Jellyfish (Mastigias papua) this species stings, relative to non-stinging species in lakes, Palau

Norbert Wu / Papuan Jellyfish (Mastigias papua) has a powerful sting as opposed to their stingless cousins in landlocked Jellyfish Lake, Palau

Norbert Wu / Papuan Jellyfish (Mastigias papua) often lies upside-down on lagoon floor, South Pacific

Norbert Wu / Papuan Jellyfish (Mastigias papua) in rare landlocked lake, Kakaban Island, Borneo

Juergen Freund / Papua jellyfish {Mastigas papua} Indo-Pacific

Nature Production / Papuan Jellyfish {Mastigias sp} in Jellyfish Lake, Palau, Micronesia

Nature Production / Papuan Jellyfish {Mastigias sp} at Jerry Fish Lake, Palau

Nature Production / Papuan Jellyfish {Mastigias papua} Miura Peninsula, Kanagawa, Japan, august

Jeff Vanuga / Kirk's Dikdik (Madoqua kirki) marking territory by defecating, Samburu National Reserve, Kenya, Africa.

Winfried Wisniewski / Kirk's Dik-dik (Madoqua kirkii), Samburu-Isiolo Game Reserve, Kenya

Winfried Wisniewski / Kirk's Dik-dik (Madoqua kirkii), Samburu-Isiolo Game Reserve, Kenya

Enrique Lopez-Tapia / Kirk's dik dik (Madoqua kirkii) on the lower parts of the Kilimanjaro mountain, Tanzania

Edwin Giesbers / Kirk's dik-dik (Madoqua kirkii) portrait, captive

Edwin Giesbers / Kirk's dik-dik (Madoqua kirkii) portrait, captive

Edwin Giesbers / Kirk's dik-dik (Madoqua kirkii) portrait, captive

Edwin Giesbers / Kirk's dik-dik (Madoqua kirkii) portrait, captive

Ole Jorgen Liodden / Kirk's Dik-dik (Madoqua kirkii) in grass. Samburu, Kenya, December.

Rod Williams / Kirk's Dik Dik (Madoqua kirkii) browsing. Captive. Occurs East Africa.

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) male, Mpala Research Centre, Kenya

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) female and male, Loisaba Wilderness, Kenya

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) female and male, Mpala Research Centre, Kenya

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) male, Kenya

Nick Garbutt / Kirk's Dik-Dik (Madoqua kirki) male standing in tall grass, Tarangire National Park, Tanzania.

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) pair, Ol Malo Wildlife Sanctuary, Kenya

Tui De Roy / Kirk's Dik-dik (Madoqua kirkii) portrait, Mpala Research Centre, Kenya

Chris Gomersall / Damaraland dik-dik (Madoqua kirki damarensis) female feeding, Etosha National Park, Namibia, November

George Sanker / Male Kirk's dik dik (Madoqua kirkii) walking through bush, Samburu National Park, Kenya, January

Konrad Wothe / Kirk's Dik-dik (Madoqua kirkii) nibbling foliage, Serengeti National Park, Tanzania

Suzi Eszterhas / Kirk's dik dik {Madoqua kirkii} Sarara Camp, Namunyak Conservancy, Northern Rangelands, Kenya

Suzi Eszterhas / Kirk's Dik-dik (Madoqua kirkii), Sarara Camp, Namunyak Wildlife Conservancy, Kenya

Peter Blackwell / Kirk's dik dik {Madoqua kirki}, Samburu NR, Kenya

Tony Heald / Kirk's / Damara dik dik {Madoqua kirkii} male feeding on vegetation, Etosha NP, Namibia, January

Anup Shah / Two Kirk's dik dik in scrub habitat (Madoqua kirki) East Africa

Hermann Brehm / Kirk's Dik Dik {Madoqua kirki} Tarangire NP, Tanzania

Tony Heald / Kirk's dik dik {Madoqua kirki} male, Etosha NP, Namibia

Peter Blackwell / Kirk's dik dik {Madoqua kirki} Masai Mara NP, Kenya

Richard Du Toit / Kirk's dik dik (Madoqua kirki) male, Etosha NP, Namibia

Bernard Castelein / Kirk's Dik-Dik {Madoqua kirki} Serengeti NP, Tanzania

Richard Du Toit / Male Kirk's dik dik {Madoqua kirki} Etosha NP, Namibia

Mike Wilkes / Pair of Kirk's dik dik (Madoqua kirki) Tanzania, East Africa

Tony Heald / Kirk's / Damara dik-dik {Madoqua kirki} male browsing, Etosha NP, Namibia

Richard Du Toit / Kirk's / Damara dik dik in dry season {Madoqua kirki} Etosha NP, Namibia

Anup Shah / Kirk's dik dik in long grass {Madoqua kirki} Tarangire NP, Tanzania

Richard Du Toit / Kirk's Dik-dik (Madoqua kirkii) profile, side view, Etosha National Park, Namibia

Michael & Patricia Fogden / Kirk's Dik-dik (Madoqua kirkii), Etosha National Park, Namibia

Michael & Patricia Fogden / Kirk's Dik-dik (Madoqua kirkii), Etosha National Park, Namibia

Michael & Patricia Fogden / Kirk's Dik-dik (Madoqua kirkii), Etosha National Park, Namibia

Thomas Mangelsen / Kirk's Dik-dik (Madoqua kirkii) in tall grass, Africa

Peter Blackwell / Kirk's dik dik (Madoqua kirki) in long grass. Maasai Mara Reserve, Kenya, East Africa

Richard Du Toit / Kirk's dik dik, Etosha NP, Namibia

Tony Heald / Kirk's dik dik male, Etosha NP, Namibia

Mike Wilkes / Kirk's dik dik {Madoqua kirki} Serengeti NP, Tanzania

Pete Oxford / Kirk's (Damaraland) Dik Dik, Etosha NP, Namibia

TJ Rich / Female Kirk's Dik-Dik (Madoqua kirkii) Masai Mara, Kenya

TJ Rich / Female Kirk's Dik-Dik sniffing the air (Madoqua kirkii) Masai Mara, Kenya

Andrew Parkinson / Kirk's dik dik in thorn bush {Madoqua kirki} Etosha NP, Namibia

Suzi Eszterhas / Kirk's Dik-dik (Madoqua kirkii), Serengeti National Park, Tanzania

Kevin Schafer / Kirk's Dik-dik (Madoqua kirkii), Serengeti National Park, Tanzania

Kevin Schafer / Kirk's Dik-dik (Madoqua kirkii), Serengeti National Park, Tanzania