Artificial islands are man-made landmasses created for various purposes, such as tourism, housing, or industry. They can be built using materials like sand, rocks, and concrete, often in coastal areas or on water bodies. Notable examples include the Palm Jumeirah in Dubai and the Flevopolder in the Netherlands. These islands can help alleviate land shortages in densely populated regions and provide new habitats for wildlife. However, their construction can also lead to environmental concerns, such as disruption of marine ecosystems and changes in local water currents. Proper planning and management are essential for sustainable development.