There is disclosed a subsea connector (100), e.g. a mooring connector, and a method of mooring a subsea structure to a line, e.g. a mooring chain, with the subsea connector. The subsea connector comprises a first portion (105) and a second portion (110), means for connecting (120) the first portion and the second portion, and means for rotationally aligning the first portion and the second portion. The first and second portions are connectable to a respective line, such as a respective mooring chain. The means for rotationally aligning comprise a first alignment member at least partly spanning across a bore, such as an internal bore, of the first or second portion. The means for rotationally aligning comprise a second alignment member provided by the other of the first or second portion. The first and second alignment members co-act when the first and second portions are brought together or mated.