Gut Weed - Ulva intestinalis

Alternative names
Gutweed, Grass Kelp
Description

This bright green algae grows into tubular fronds, 10-30cm in length and 6-18mm in diameter. Though principally a marine species it is found in brackish water and occasionally in freshwater, typically where eutrophic conditions exists due to high nitrate pollution.

Identification difficulty
Recording advice

A good image is required.

Habitat

Though mainly a marine species, it is found in eutrophic freshwater.

When to see it

All year.

UK Status

Common as a coastal species, rare inland.

VC55 Status

Rare

Further Information

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
Gut Weed, Gutweed
Species group:
Algae, Bacteria, Virus
Kingdom:
Order:
Family:
Records on NatureSpot:
2
First record:
04/10/2023 (Nicholls, David)
Last record:
10/10/2023 (Nicholls, David)

Total records by month

% of records within its species group

10km squares with records

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