Punctured Ball Weed?

Punctured Ball Weed?

Observation - Punctured Ball Weed? - UK and Ireland. Description: Washed up on the beach. Gelatinous olive-green, bladder partially filled with liquid. It might be th

Washed up on the beach. Gelatinous olive-green, bladder partially filled with liquid. It might be this. If not,....
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Colpomenia peregina is a similar albeit invasive species described as “dry and papery to touch”. (MarLIN). Read more, here:
https://www.marlin.ac.uk/species/detail/2164
Note the photographer!
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The Seaweeds Invitation Gallery, on iSpot:
https://www.ispotnature.org/communities/uk-and-ireland/view/project/777036/the-seaweeds-invitation-gallery