Name tne sea between Kowloon Peninsula and Hong kong Island

The answer is Victoria Harbour (維多利亞港).

Victoria Harbour is the harbour between the Kowloon Peninsula and the Hong Kong Island of Hong Kong, China. With an area of about 41.88 km² as at 2004, its natural depth and sheltered location enticed the British to occupy the Hong Kong Island during the First Opium War, and subsequently established the colony as a trade post.

The harbour is famous for its spectacular panoramic views, and is in itself a top tourism attraction. It is a natural focal point of the territory, and considered a crucial natural geographical element for city dwellers. This sense of geographical attachment is most notably demonstrated in recent years, when the Government's efforts to undertake reclamation projects in the harbour were met with widespread popular protests, despite reclamation work having taken place in the harbour for the past one and a half centuries.

Geography
Islands
Islands in the Harbour include:

Green Island (on the western border of the Harbour)
Little Green Island
Kowloon Rock
Tsing Yi Island (on the western border of the Harbour)
Former islands (connected to adjacent lands or larger islands following land reclamation):

Stonecutters Island - now connected to Lai Chi Kok Bay, New Kowloon
Channel Rock - now connected to Kwun Tong, New Kowloon
Kellet Island - now connected to Causeway Bay, Hong Kong Island
Hoi Sham Island - now connected to To Kwa Wan, Kowloon
Nga Ying Chau - now connected to Tsing Yi Island, New Territories
Pillar Island - now connected to Kwai Chung, New Territories
Mong Chau - now connected to Kwai Chung, New Territories
Chau Tsai - now connected to Tsing Yi Island

Boundaries of the Harbour
On the East: A straight line drawn from the westernmost extremity of Siu Chau Wan(小酒灣) point to the westernmost extremity of Ah Kung Ngam(阿公岩) point(sometimes known as Kung Am(公岩))

On the West: A straight line drawn from the westernmost point of Hong Kong Island to the westernmost point of Green Island(青洲),thence a straight line drawn from the westernmost point of Green Island to the southeasternmost point of Tsing Yi(青衣島), thence along the eastern and northern coastal lines of Tsing Yi to the westernmost extremity of Tsing Yi and thence a straight line drawn true north therefrom to the mainland

History
Recent developments
After completion of the Central and Wan Chai Reclamation Feasibility Study in 1989, the Land Development Policy Committee endorsed a concept for gradual implementation of the reclamation. The reclamation consists of three district development cells separated by parks, namely, Central, Tamar and Exhibition.

The latest proposed reclamation extends along the waterfront from Sheung Wan to Causeway Bay faced public opposition, as the harbour has become a pivotal location to Hongkongers in general. Activists has denounced the government's actions as destructive not only to the natural environment, but also to what is widely considered as one of the most prized natural assets of the territory. NGOs, including the Society for Protection of the Harbour, were formed to resist further attempts to reduce the size of the waterbody, with its chairman, Christine Loh, quoted as saying that the harbour "...is a precious national asset and we must preserve it for future generations. I believe an insightful and visionary Chief Executive would support our stance and work with us to protect the harbour."

香港面積有幾大

Victoria Harbour
Pleae see the Map of Hong Kong.
(this is no name of sea)

South China Sea