Old stone archway from the ruined abbey in the sub-tropical Abbey Gardens, Island of Tresco, Isles of Scilly, England, United Kingdom, Europe

Gaia sculpture by David Wynne, 1989, in the sub-tropical Abbey Gardens, Island of Tresco, Isles of Scilly, England, United Kingdom, Europe

Sunlight through old olives trees (Olea europaea) in olive grove for traditional olive oil in sub-tropical climate of Corfu, Greek Islands, Greece, Europe

Sunlight through old olives trees (Olea europaea) in olive grove for traditional olive oil in sub-tropical climate of Corfu, Greek Islands, Greece, Europe

Kayaking on the Iguazu River past sub-tropical rainforest, near Andresito, Iguazu National Park, Misiones Province, Argentina, South America

Sub tropical forest, Hunting Island State Park, South Carolina, United States of America, North America

Sub tropical forest, Hunting Island State Park, South Carolina, United States of America (U.S.A.), North America

Sub-adult Sperm Whale (Physeter macrocephalus) surfacing (note the peeling skin) near Isla San Pedro Martir in the midriff region of the Gulf of California (Sea of Cortez), Mexico

Over/sub surface view tropical island. Borneo, Malaysia (A4 only).

Sub-adult Sperm Whale (Physeter macrocephalus) breaching in northern Gulf of California, Mexico

Beach with shelter from trees and sub-tropical planting, Baie aux Tortues, Pointe aux Pimentes, Mauritius, Indian Ocean, Africa

Sub-tropical planting and entrance to a villa, Baie aux Tortues, Pointe aux Pimentes, Mauritius, Africa

Close Up Of American Alligator (Alligator Mississippiensis) Resting On A Log In St. Johns River, Blue Spring State Park, Orange City, Florida, United States Of America

Young woman walking past an historical deep ocean, research submarine on display on the waterfront at George Town, Grand Cayman, Cayman Islands, Caribbean

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador

Bosque Mindo-Nambillo a protected reserve of sub-tropical cloud forest at 2500' on western slopes of the Andes in the Choco Bio-region, North of Quito, Highlands, Ecuador