Gavin Hellier / Elevated view along the Corniche, latticed houses and Mutrah Mosque, Mutrah, Muscat, Oman 2007

Gavin Hellier / Mutrah Corniche with latticed white buildings and Mosque with the mountains behind, Muscat, Oman 2007

Hanne & Jens Eriksen / Date palm {Phoenix dactylifera} looking up at the ripening dates, Muscat, Oman

Hanne & Jens Eriksen / Greater spotted eagle in flight {Aquila clanga}. Muscat, Oman, December

Hanne & Jens Eriksen / Steppe eagle, 1st winter {Aquila rapax nipalensis} Muscat, Oman, Middle East

Michel Roggo / Underwater view of Wadi Al Arbiyeen With Tilapia, probably Nile Tilapia (Oreochromis niloticus) Muscat Governorate, Sultanate of Oman. February. Photographed for The Freshwater Project

Michel Roggo / Wadi Al Arbiyeen Muscat Governorate, Sultanate of Oman, February 2015 . Photographed for The Freshwater Project

Michel Roggo / Wadi Al Arbiyeen Muscat Governorate, Sultanate of Oman Underwater shot February 2015 . Photographed for The Freshwater Project

Michel Roggo / Underwater view of Wadi Al Arbiyeen With Tilapia, probably Nile Tilapia (Oreochromis niloticus) Muscat Governorate, Sultanate of Oman. February. Photographed for The Freshwater Project

Michel Roggo / Split level view of Wadi Al Arbiyeen Muscat Governorate, Sultanate of Oman. February 2015 . Photographed for The Freshwater Project

Michel Roggo / Underwater view of Hawiyat Najm, a deep natural depression filled with water, Muscat Governorate, Sultanate of Oman. February 2015 . Photographed for The Freshwater Project

Michel Roggo / Wadi Al Arbiyeen Muscat Governorate, Sultanate of Oman, February 2015. Photographed for The Freshwater Project