| argentina | rio negro province | scytosiphon lomentaria | species | 12 | 0 |
| australia | new south wales | scytosiphon lomentaria | species | 2 | 0 |
| australia | tasmania | scytosiphon lomentaria | species | 1 | 0 |
| australia | victoria | scytosiphon lomentaria | species | 4009 | 0 |
| australia | victoria | scytosiphon sp. 1lomentaria | species | 2 | 0 |
| canada | british columbia | scytosiphon canaliculatus | species | 30 | 0 |
| canada | british columbia | scytosiphon sp. 1 gws-2013 | species | 48 | 0 |
| canada | british columbia | scytosiphon sp. 2 gws-2013 | species | 7 | 0 |
| canada | manitoba | scytosiphon canaliculatus | species | 4 | 0 |
| canada | new brunswick | scytosiphon canaliculatus | species | 28 | 0 |
| canada | new brunswick | scytosiphon complanatus | species | 5 | 0 |
| canada | new brunswick | scytosiphon sp. 1 gws-2013 | species | 7 | 0 |
| canada | new brunswick | scytosiphon sp. 2 gws-2013 | species | 48 | 0 |
| canada | newfoundland and labrador | scytosiphon canaliculatus | species | 3 | 0 |
| canada | newfoundland and labrador | scytosiphon lomentaria | species | 7 | 0 |
| canada | newfoundland and labrador | scytosiphon sp. 1 gws-2013 | species | 8 | 0 |
| canada | newfoundland and labrador | scytosiphon sp. 2 gws-2013 | species | 4 | 0 |
| canada | nova scotia | scytosiphon canaliculatus | species | 10 | 0 |
| canada | quebec | scytosiphon canaliculatus | species | 14 | 0 |
| canada | quebec | scytosiphon complanatus | species | 6 | 0 |
| canada | quebec | scytosiphon sp. 2 gws-2013 | species | 4 | 0 |
| chile | | scytosiphon fascia | species | 12 | 0 |
| chile | | scytosiphon lomentaria | species | 61 | 0 |
| chile | | scytosiphon sp. ccc-2009a | species | 19 | 0 |
| chile | | scytosiphon tenellus | species | 14 | 0 |
| chile | biobio region | scytosiphon fascia | species | 6 | 0 |
| chile | biobio region | scytosiphon lomentaria | species | 15 | 0 |
| chile | biobio region | scytosiphon sp. ccc-2009a | species | 2 | 0 |
| chile | coquimbo region | scytosiphon fascia | species | 2 | 0 |
| chile | coquimbo region | scytosiphon gracilis | species | 2 | 0 |
| chile | coquimbo region | scytosiphon lomentaria | species | 22 | 0 |
| chile | coquimbo region | scytosiphon sp. ccc-2009a | species | 1 | 0 |
| chile | los lagos region | scytosiphon fascia | species | 15 | 0 |
| chile | los lagos region | scytosiphon lomentaria | species | 43 | 0 |
| chile | los lagos region | scytosiphon sp. ccc-2009a | species | 32 | 0 |
| chile | magallanes region | scytosiphon lomentaria | species | 8 | 0 |
| chile | o'higgins region | scytosiphon lomentaria | species | 8 | 0 |
| chile | o'higgins region | scytosiphon tenellus | species | 2 | 0 |
| chile | santiago metropolitan region | scytosiphon fascia | species | 6 | 0 |
| chile | santiago metropolitan region | scytosiphon lomentaria | species | 19 | 0 |
| chile | santiago metropolitan region | scytosiphon sp. ccc-2009a | species | 71 | 0 |
| chile | santiago metropolitan region | scytosiphon tenellus | species | 29 | 0 |
| chile | valparaiso region | scytosiphon fascia | species | 6 | 0 |
| chile | valparaiso region | scytosiphon gracilis | species | 3 | 0 |
| chile | valparaiso region | scytosiphon lomentaria | species | 42 | 0 |
| chile | valparaiso region | scytosiphon sp. ccc-2009a | species | 928 | 0 |
| china | | scytosiphon dotyi | species | 2 | 0 |
| china | | scytosiphon lomentaria | species | 29 | 0 |
| china | shandong | scytosiphon dotyi | species | 1 | 0 |
| china | shandong | scytosiphon lomentaria | species | 1 | 0 |
| france | | scytosiphon lomentaria | species | 1 | 0 |
| france | bretagne region | scytosiphon lomentaria | species | 64 | 0 |
| greece | attica region | scytosiphon lomentaria | species | 2 | 0 |
| iceland | southern ppeninsula | scytosiphon lomentaria | species | 6 | 0 |
| isle of man | | scytosiphon lomentaria | species | 2 | 0 |
| italy | | scytosiphon lomentaria | species | 4 | 0 |
| italy | tuscany region | scytosiphon lomentaria | species | 1 | 0 |
| japan | | scytosiphon lomentaria | species | 1 | 0 |
| japan | | scytosiphon sp. 2 gws-2013 | species | 3 | 0 |
| japan | aichi prefecture | scytosiphon lomentaria | species | 3 | 0 |
| japan | akita prefecture | scytosiphon lomentaria | species | 15 | 0 |
| japan | aomori prefecture | scytosiphon lomentaria | species | 29 | 0 |
| japan | chiba prefecture | scytosiphon lomentaria | species | 39 | 0 |
| japan | fukui prefecture | scytosiphon lomentaria | species | 26 | 0 |
| japan | fukuoka prefecture | scytosiphon lomentaria | species | 10 | 0 |
| japan | fukushima prefecture | scytosiphon lomentaria | species | 11 | 0 |
| japan | hiroshima prefecture | scytosiphon lomentaria | species | 9 | 0 |
| japan | hokkaido prefecture | scytosiphon canaliculatus | species | 1 | 0 |
| japan | hokkaido prefecture | scytosiphon lomentaria | species | 690 | 0 |
| japan | hokkaido prefecture | scytosiphon sp. 2 gws-2013 | species | 49 | 0 |
| japan | hokkaido prefecture | scytosiphon tenellus | species | 2 | 0 |
| japan | ishikawa prefecture | scytosiphon lomentaria | species | 13 | 0 |
| japan | iwate prefecture | scytosiphon lomentaria | species | 13 | 0 |
| japan | kagoshima prefecture | scytosiphon lomentaria | species | 2 | 0 |
| japan | kanagawa prefecture | scytosiphon lomentaria | species | 28 | 0 |
| japan | kyoto prefecture | scytosiphon lomentaria | species | 4 | 0 |
| japan | mie prefecture | scytosiphon lomentaria | species | 1 | 0 |
| japan | shimane prefecture | scytosiphon lomentaria | species | 38 | 0 |
| japan | shizuoka prefecture | scytosiphon lomentaria | species | 11 | 0 |
| japan | tottori prefecture | scytosiphon lomentaria | species | 10 | 0 |
| japan | yamaguchi prefecture | scytosiphon lomentaria | species | 3 | 0 |
| new zealand | wellington | scytosiphon lomentaria | species | 6 | 0 |
| norway | | scytosiphon lomentaria | species | 3 | 0 |
| norway | hordaland county | scytosiphon lomentaria | species | 3 | 0 |
| norway | hordaland county | scytosiphon sp. 2 gws-2013 | species | 2 | 0 |
| norway | more og romsdal county | scytosiphon lomentaria | species | 8 | 0 |
| norway | nordland county | scytosiphon lomentaria | species | 1 | 0 |
| russia | kamchatka krai | scytosiphon lomentaria | species | 2 | 0 |
| russia | kamchatka krai | scytosiphon sp. 2 gws-2013 | species | 1 | 0 |
| russia | magadan oblast | scytosiphon sp. 2 gws-2013 | species | 66 | 0 |
| south korea | | scytosiphon gracilis | species | 2 | 0 |
| south korea | | scytosiphon lomentaria | species | 24 | 0 |
| south korea | busan city | scytosiphon lomentaria | species | 2 | 0 |
| south korea | jeju province | scytosiphon gracilis | species | 23 | 0 |
| south korea | jeju province | scytosiphon lomentaria | species | 4 | 0 |
| south korea | south gyeongsang province | scytosiphon lomentaria | species | 6 | 0 |
| spain | catalonia | scytosiphon lomentaria | species | 1 | 0 |
| united kingdom | wales | scytosiphon lomentaria | species | 4 | 0 |
| united states | california | scytosiphon dotyi | species | 3 | 0 |
| united states | connecticut | scytosiphon sp. 1 gws-2013 | species | 3 | 0 |
| united states | maine | scytosiphon canaliculatus | species | 11 | 0 |
| united states | maine | scytosiphon lomentaria | species | 2 | 0 |
| united states | maine | scytosiphon sp. 2 gws-2013 | species | 12 | 0 |
| united states | massachusetts | scytosiphon sp. 1 gws-2013 | species | 1 | 0 |
| united states | massachusetts | scytosiphon sp. 6lomentaria | species | 1 | 0 |
| united states | oregon | scytosiphon lomentaria | species | 10 | 0 |
| united states | rhode island | scytosiphon sp. 1 gws-2013 | species | 21 | 0 |
| united states | rhode island | scytosiphon sp. 2 gws-2013 | species | 6 | 0 |
| united states | rhode island | scytosiphon sp. 6lomentaria | species | 3 | 0 |
| united states | washington | scytosiphon lomentaria | species | 4 | 0 |