Pylaiella littoralis
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Ectocarpales
- family: Acinetosporaceae
- genus: Pylaiella
- species: Pylaiella littoralis
Nanaimo
North Saanich
Sooke
British ColumbiaHalifax
Nova ScotiaGaspé
Quebec
CanadaRoscoff
A2
FranceVlissingen
Zeeland
NetherlandsKaikoura
Canterbury
New ZealandPorto
Vila Nova de Gaia
Porto
PortugalBerwick-Upon-Tweed
Birchington-on-Sea
Borough Green
Brighton
Chafford Hundred
Clacton-on-Sea
Dover
Dovercourt
Falmouth
Folkestone
Gillingham
Gravesend
Grays
Greenhithe
Harwich
Hoo
Hugh Town
Isles of Scilly
Margate
Penzance
Saint Osyth
Swanage
Swanscombe
Tilbury
West Thurrock
Westgate on Sea
Weymouth
Whitby
England
United KingdomDiamond Ridge
Dutch Harbor
Homer
Nome
Unalaska
AlaskaBridgeport
West Haven
ConnecticutHonolulu
HawaiiKittery
Kittery Point
Northport
MaineCohasset
Lynn
Medford
Nahant
North Scituate
Sandwich
Somerville
MassachusettsNew Castle
New Hampshire
United States