Red Seaweeds 1

Division Rhodophyta

HAWAII

Acanthophora spicifera

Makapu'u Intertidal, Oahu

Black Point, Oahu

 

Black Point, Oahu

 

Black Point, Oahu

Black Point, Oahu

Black Point, Oahu

Introduced species abundant on shallow reefs.  Stiff and prickly, yellow to brown.

Acanthophora pacifica

Haleiwa Trench, Oahu, 5 feet

 

Sharks Cove, Oahu, 3 feet

Sharks Cove, Oahu, 3 feet

 

Firehouse, Oahu, 40 feet

Kaupo Bay, Oahu, 4 feet

 

Kaupo Bay, Oahu, 4 feet

Makua, Oahu, 25 feet

Locally common on wave-washed reefs in shallow water.

Actinotrichia fragilis

Makapu'u tidepool, Oahu

Makapu'u tidepool, Oahu

Uncommon in shallow water.  Color and fine concentric rings are distinctive.

Ahnfeltiopsis concinna

Makapu'u intertidal, Oahu

 

Makapu'u intertidal, Oahu

Kaupulehu, Hawaii

Common high on basalt shores exposed to waves.

Ahnfeltiopsis flabelliformis

Makapu'u intertidal, Oahu

Makapu'u tidepool, Oahu

Common on basalt wave benches exposed to surf.

Amansia glomerata

Makapu'u tidepool, Oahu

Abundant as turfs in shaded areas in shallow water.  Margins are lined with tiny projections.

Grateloupia phuquocensis

Black Point, Oahu

Black Point, Oahu

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

Kahala, Oahu, 3 feet

Kahala, Oahu, 3 feet

Occasional on shallow reefs.  Thin branches are heavily calcified.

Amphiroa valonioides

Makapu'u tidepool, Oahu

Makapu'u tidepool, Oahu

Common in tidepools and wave benches.

Asparagopsis taxiformis

Makapu'u intertidal, Oahu

 

Sharks Cove tidepool, Oahu

Midway Atoll

Kahe Point, Oahu, 20 feet

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

Occasional on reefs.  Filaments are fine and straight.

Neosiphonia sphaerocarpa

Portlock, Oahu

 

Diamond Head, Oahu

Diamond Head, Oahu

Common in the intertidal zone.

Botryocladia skottsbergii

Makapu'u intertidal, Oahu

 

Makapu'u intertidal, Oahu

Makapu'u intertidal, Oahu

Common in shaded areas exposed to surf at the low tide mark.

Centroceras clavulatum 

Black Point, Oahu

 

Black Point, Oahu

Black Point, Oahu

Black Point, Oahu

Common as turf in the intertidal & shallow subtidal.  Segmented branches have characteristic pincer-like tips.

Dasya iridescens

Makapu'u tidepool, Oahu

 

Makapu'u tidepool, Oahu

Makapu'u tidepool, Oahu

Kewalo, Oahu, Hawaii, 60 feet

An iridescent species common in shallow water and tidepools.

Gibsmithia hawaiiensis

Sharks Cove, Oahu, 25 feet

 

Sharks Cove, Oahu, 25 feet

Sharks Cove, Oahu, 25 feet

Sharks Cove, Oahu, 25 feet

Occasional at scuba depths.

Haloplegma duperreyi

Makapu'u intertidal, Oahu

Makapu'u intertidal, Oahu

Locally abundant in shaded vertical areas in shallow water.  Becomes loaded with silt.

Halymenia sp.

Kahe Point, Oahu, 20 feet

 

Kaupo, Oahu, 6 feet

Makua, Oahu, 25 feet

 

Haleiwa Trench, Oahu, 70 feet

Haleiwa Trench, Oahu, 70 feet

Honokohau, Hawaii, 60 feet

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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