The Strait of Gibraltar is a narrow waterway located between the southern tip of the Iberian Peninsula (Spain) and the northern tip of Morocco (North Africa). It connects two major water bodies, namely the Mediterranean Sea and the Atlantic Ocean. Here is a detailed explanation of this answer:

Location and Geography:
1. The Strait of Gibraltar is situated at the western entrance to the Mediterranean Sea.
2. It is approximately 14.3 kilometers (8.9 miles) wide at its narrowest point.
3. The waterway separates the continents of Europe and Africa.
4. The Rock of Gibraltar, a prominent landmark, lies on the European side of the strait.

Connecting the Mediterranean Sea and Atlantic Ocean:
1. The Mediterranean Sea is a large inland sea located between Europe, Africa, and Asia.
2. It is connected to the Atlantic Ocean through the Strait of Gibraltar.
3. The Atlantic Ocean is the second-largest ocean in the world and forms part of the global ocean system.

Importance and Significance:
1. The Strait of Gibraltar has significant strategic, economic, and geopolitical importance.
2. It serves as a crucial shipping route between the Mediterranean and the Atlantic.
3. The strait is a major thoroughfare for international maritime trade, connecting Europe, Africa, and the Americas.
4. It is also a vital transit point for oil tankers and cargo ships, facilitating trade between different regions.
5. The strong currents and narrow passage make navigation through the strait challenging, requiring careful maneuvering by ships.
6. The strait's location has historical and cultural significance, as it has been a crossing point between Europe and Africa for centuries.

Environmental and Ecological Considerations:
1. The Strait of Gibraltar is known for its rich biodiversity and unique marine ecosystem.
2. The mixing of waters from the Mediterranean and the Atlantic results in a diverse array of marine life.
3. The strait is home to various species of whales, dolphins, and migratory birds.
4. It also serves as an important migration route for fish species, contributing to the region's fishing industry.

In conclusion, the Strait of Gibraltar connects the Mediterranean Sea and the Atlantic Ocean. It is a vital waterway for international trade and has significant ecological and environmental importance.