Cormorant?

Cormorant?

Observation - Cormorant?. Description: I am used to seeing Cormorants in flight and sitting on tree branches hanging their wings out to dry (or to cool themselves down) but I cannot remember seeing one swimming in the water. The bird in photos 1 to 6 sat very low and un-ducklike in the water a

I am used to seeing Cormorants in flight and sitting on tree branches hanging their wings out to dry (or to cool themselves down) but I cannot remember seeing one swimming in the water. The bird in photos 1 to 6 sat very low and un-ducklike in the water and every so often dived beneath the water. Cormorants are in the area as photos 7 and 8 illustrate (just about) so I am guessing that the bird on/in the water here is a Cormorant. Can folks confirm or suggest an alternative? Thanks.