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Red Seaweeds 1
Division Rhodophyta
HAWAII
Acanthophora spicifera
Makapu'u Intertidal, Oahu |
Black Point, Oahu
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Black Point, Oahu |
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| Introduced species abundant on shallow reefs. Stiff and prickly,
yellow to brown. |
Acanthophora pacifica
Haleiwa Trench, Oahu, 5 feet
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Sharks Cove, Oahu, 3 feet |
Sharks Cove, Oahu, 3 feet
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Firehouse, Oahu, 40 feet |
Kaupo Bay, Oahu, 4 feet
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Sharks Cove, Oahu, 20 feet
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Makua, Oahu, 25 feet |
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| Locally common on wave-washed reefs in shallow water. |
Acrosymphytum taylorii
| Seasonally common during spring at scuba depths. Hawaii &
Australia's GBR. |
Actinotrichia fragilis
Makapu'u tidepool, Oahu |
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| Uncommon in shallow water. Color and fine concentric rings are
distinctive. |
Ahnfeltiopsis concinna
Makapu'u intertidal, Oahu
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Kaupulehu, Hawaii |
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| Common high on basalt shores exposed to waves. |
Ahnfeltiopsis flabelliformis
Makapu'u intertidal, Oahu |
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| Common on basalt wave benches exposed to surf. |
Amansia glomerata
Makapu'u tidepool, Oahu |
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| Abundant as turfs in shaded areas in shallow water. Margins are
lined with tiny projections. |
Grateloupia phuquocensis
Black Point, Oahu |
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| Common as turfs in shaded areas in shallow water. Margins are
not lined with tiny projections as in Amansia glomerata.
Red to brown. |
Amphiroa beauvoisii
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Kahala, Oahu, 3 feet
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Kaiona, Oahu, 6 feet |
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| Occasional on shallow reefs. Thin branches are heavily
calcified. |
Amphiroa valonioides
Makapu'u tidepool, Oahu |
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| Common in tidepools and wave benches. |
Asparagopsis taxiformis
Makapu'u intertidal, Oahu
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Sharks Cove tidepool, Oahu |
Midway Atoll |
Kahe Point, Oahu, 20 feet |
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LIMU KOHU
| Abundant on reefs and benches to 30 feet. Color and stature
varies with habitat. Eaten finely chopped, salted, and formed into
balls. |
Bangia atropurpurea
Kahe Point, Oahu, 20 feet |
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| Occasional on reefs. Filaments are fine and straight. |
Neosiphonia sphaerocarpa
Diamond Head, Oahu
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Portlock, Oahu
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| Common in the intertidal zone. |
Botryocladia skottsbergii
| Common in shaded areas exposed to surf at the low tide mark. |
Centroceras clavulatum
| Common as turf in the intertidal & shallow subtidal.
Segmented branches have characteristic pincer-like tips. |
Dasya iridescens
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Makapu'u tidepool, Oahu
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Kewalo, Oahu, Hawaii, 60 feet |
Black Point, Oahu, 5 feet |
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| An iridescent species common in shallow water and tidepools. |
Scinaia furcata 
Sharks Cove, Oahu, 25 feet
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| Occasional at scuba depths. Segmented appearance. S.
hormoides has inflated tips. Endemic to Oahu. |
Gibsmithia hawaiiensis
| Occasional at scuba depths. |
Haloplegma duperreyi
Makapu'u intertidal, Oahu |
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| Locally abundant in shaded vertical areas in shallow water.
Becomes loaded with silt. |
Halymenia sp.
Kahe Point, Oahu, 20 feet
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Kaupo, Oahu, 6 feet |
Haleiwa Trench, Oahu, 70 feet
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Makua, Oahu, 25 feet
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Honokohau, Hawaii, 60 feet |
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Makai Pier, Waimanalo, Oahu, 6 feet |
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| A large yellow to reddish brown species seasonally common at scuba
depths. Arises from a single holdfast and has dissected margins.
An undescribed species formerly identified as H. formosa. |
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