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Celebrating 100 Years of Science! | 1925-2025

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The kelp Macrocystis integrifolia washed up on a beach at Pacific Grove, California
The kelp Macrocystis integrifolia washed up on a…
Estuarine mud flat at Morro Bay showing extensive macroalgae growth
Mud flat at low tide
Starfish and macroalgae in a rocky intertidal area at Sea West, north of Morro Bay, California
Rocky intertidal area at Sea West, north of Morro…
Tide pool, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Seaweed, Seawall, Acadia National Park, Maine
Ria Formosa, Priai de Faro, Portugal
Ulva and Codium on tidal flat
One-lane bridge to Praia de Faro (Faro Beach) crosses the estuary where at low tide, shorelines are covered in macroalgae. Concrete boat ramp in lower left.
Low tide on the Ria Formosa
Illustration of Enteromorpha intestinalis (Gutweed)
Enteromorpha intestinalis (Gutweed)
Illustration of Ulva spp. (Sea Lettuce)
Ulva spp. (Sea Lettuce)
This conceptual diagram depicts the environmental factors that lead to harmful algal blooms in the Potomac River. The diagram compares ideal bloom conditions to poor bloom conditions.
Environmental conditions that lead to harmful…
May 2005, North Fork Tred Avon River, Easton, MD
Floating mat of green algae
May 2005, North Fork of the Tred Avon River, Easton, MD
Floating mats of green algae and horned pondweed
May 2005, North Fork Tred Avon River, Easton, MD
Floating mats of green algae and pondweed
Illustration of Caulerpa filiformis
Caulerpa filiformis
Illustration of Caulerpa taxifolia
Caulerpa taxifolia
Illustration of Chaetomorpha spp.
Chaetomorpha spp
Illustration of Chaetomorpha spp. microscopic view
Chaetomorpha spp. microscopic view
Illustration of Chondrus crispus (Irish Moss)
Chondrus crispus (Irish Moss)
Illustration of Codium fragile (Dead Man's Fingers)
Codium fragile (Dead Man's Fingers)
Illustration of Colpomenia spp.
Colpomenia spp
Illustration of Cryptopleura ramosa
Cryptopleura ramosa
Illustration of Cystoseira compressa
Cystoseira compressa
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