Final answer:
The Danube Delta is located in Romania and is known for its remarkable biodiversity and importance as a habitat for wildlife.
Step-by-step explanation:
The country that has the Danube Delta is Romania. The Delta is a UNESCO World Heritage site and represents one of the most biodiverse regions in Europe, forming the largest and best-preserved of Europe's deltas. The south-flowing Danube River creates this extensive wetland area as it approaches the Black Sea.
Mobile species in the Delta can migrate, and sessile organisms often spread via ships traveling through the region's waterways. The Danube Delta provides a vital habitat for a wide variety of wildlife, including numerous species of birds and fish.