Researchers from Argentina, Bulgaria and Uruguay join 6th National Arctic Scientific Research Expedition.
Mandatory housing order applies to owners of more than 50 birds for initial 14 days as authorities seek to prevent virus from reaching poultry farms.
Soft coral species extending over 2 kilometers found at depths of 70 to 120 meters between Gokceada and Samothrace, researchers say area must eventually be protected.
TASE-VI team conducts 12 projects examining marine ecosystems, nanotechnology, meteorology and satellite navigation.
Scientists estimate rare marine formation is at least 3,200 years old, home to diverse coral reef ecosystems.