Sea lettuce
- kingdom: Plantae
- phylum: Chlorophyta
- class: Ulvophyceae
- order: Ulvales
- family: Ulvaceae
- genus: Ulva
- species: Ulva lactuca
Dee Why
Narrabeen
North Narrabeen
New South Wales
Birkenhead
Brighton
Marino
Seacliff
South Australia
Australia
Itacaré
Bahia
Torres
Rio Grande do Sul
Praia Grande
São Paulo
Brazil
North Saanich
British Columbia
Saint Andrews
Tracadie-Sheila
New Brunswick
Canada
Praia
Praia
Cape Verde
Skagen
North Denmark
Denmark
Salinas
Guayas
Ecuador
Stanley
00
Falkland Islands (Malvinas)
Biarritz
97
France
Jérémie
GrandʼAnse
Haiti
Port Antonio
Portland
Jamaica
Shimoni
Kwale
Kenya
Ebene
Plaines Wilhems
Mauritius
Vlissingen
Zeeland
Netherlands
Rothesay Bay
Auckland
New Zealand
Mayabon
San Juan
Santa Filomena
Santander
Valencia
Zamboanguita
Central Visayas
Philippines
Caban
Aguadilla
Culebra
Culebra
Guánica
Maria Antonia
Guanica
Jobos
Guayama
Guayanilla
Indios
Magas Arriba
Guayanilla
Palo Seco
Maunabo
Santa Isabel
Santa Isabel Municipio
Puerto Rico
Frillesås
Träslövsläge
Varberg
Halland
Kalmar
Oskarshamn
Kalmar
Rydebäck
Skåne
Sweden
Mahonda
South
Zanzibar Central
Tanzania
Aveley
Bembridge
Berwick-Upon-Tweed
Bognor Regis
Borough Green
Brighton
Clacton-on-Sea
Combe Martin
Dover
Dovercourt
Filey
Flamborough
Folkestone
Gillingham
Gravesend
Greenhithe
Harwich
Hoo
Hugh Town
Hythe
Isles of Scilly
Looe
Lund
Plymouth
Portishead
Portsmouth
Purfleet
Queenborough
Rayne
Redcar
Saint Osyth
Scarborough
Sidmouth
Southsea
Swanscombe
Tilbury
Walton-on-the-Naze
Wembury
West Thurrock
West Wickham
Weymouth
England
Rosehearty
Scotland
United Kingdom
Dutch Harbor
Unalaska
Alaska
Bridgeport
Mystic
Stratford
Connecticut
Gulf Gate Estates
Key West
Florida
Rumson
New Jersey
Beaufort
Kure Beach
North Carolina
Barview
Oregon
Narragansett Pier
Rhode Island
Norfolk
Portsmouth
Virginia
Friday Harbor
Rocky Point
Sequim
Tracyton
Washington
United States
Helgoland