Ropotamo Reserve is situated on the Ropotamo River which springs from Strandzha Mountain and runs into the Black Sea. The river is 48.5 km long. The lower current is the Longoza River. The Longozite (Dense forests) spread by the side of a river. The reserve was declared in 1940 as strictly guarded zone. The territory of the reserve was decreased in 1962 and later in 1992 was enlarged to 1,000.70 hectares. There are dense forests, shrubs, meadows, dunes, rocks, river estuary, marshes, sea cliff and island. Rare and endangered animal species live in the reserve such as: rodents, bats, jackal, otter (Lutra lutra) wild cat, sea-eagle, land tortoise, Leopard snake (Elaphe situla), grass snake (Coluber najadum and Coluber jugularis), Eatern spadefoot toad (Pelobates syriacus). Ropotamo was included in the Ramsar Convention. It is situated in town of Tzarevo, Borugas region.
Arkutino or Bear's Swamp is a small lagoon near the Black Sea shore. It is situated at 2.5 km northwest from the mouth of Ropotamo River. The swamp spreads on an area of 0.03 sq km and is 0.5 m deep. Arkutino is part from Ropotamo reserve along with neighbourhood dense forest with an area of 97 hectares.
Snake's Island or St. Thoma is a small island in the Black Sea in the northern part of Arkutino bay. It is situated at 200m from the shore and spreads on 1.2 hectares. The island has rocky shore and is 13 m high. There are sparse bushes and cactuses. The island is part of Ropotamo reserve.
Pyasachnata Liliya (Sand Lily) was declared protected territory in 1962 on an area of 60 hectares. The aim was to preserve one of the largest deposits of sea daffodil (Pancratium marititum) on sand dunes. It was listed in higher category in 1999 as a well kept reserve.
Velyov Vir (Water Lilies) was declared protected territory in 1962 and in 1999 was listed in higher category as a well kept reserve on an area of 13.60 hectares. There is a great deposit of water lily, yellow water lily, swamp snowdrop and dense forest in the reserve.
