Police retrieved a body found floating in the waters off Sai Kung on Sunday morning, after receiving a report at about 10am.
The body, which was was found near Wong Nai Chau Tsai, had yet to be identified.
Police said the person was 1.75 metres tall and had been wearing a purple top and a brown raincoat.
Officers added that no suicide note was found, and an autopsy would be conducted to ascertain the cause of death.