Like toothed wrack, only red. Can it be red?
No interactions present.
When sea weeds start to decompose they often go rather red/orange - was this weed attached or loose?
Hell Mark. It was loose. Part of a huge amount of seaweed that came up with the tide - several varieties in one go.
Blog - Loose and Leafy - http://looseandleafy.blogspot.com/
Lat/Lng: 50.5899, -2.4664
OS grid ref: SY670767