Immensely long belt-like frond on a stalk with a branched holdfast. I laid one piece out on an area of bare sand
No interactions present.
The practice is that algae are included in plants. If you put things in '?' you don't get a 'likely ID', and you gain no reputation points when someone agrees with your suggestions.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Form now on it's Plants all the way then...
Lat/Lng: 57.2828, -5.7333
OS grid ref: NG750275
Very low tide. I don't think it grew on this spot, as there is a sandy substrate.