Green Algae
Brown Algae
Did You Know?
Red Algae
100

Brilliant white when bleached in sun.

What is cactus algae?

100

Turns dark brown on beach.

What is pelagic sargassum?

100

Have bitter chemicals that discourage grazing by fish

What is iridescent-banded algae?

100

Where branching coralline algae grows?

What is shallow seagrass beds?

200

Looks like a smooth, dark green, miniature water balloon.

What is Sailor’s eye?

200

Attach by a hold fast to rock in turbulent waters.

What is Three-cornered Hat algae

200

Type of algae farmed as seafood and are an important part of the Asian-food lover’s diet.

What is red algae?

200

Has pale-pink branches with stubby branchlets. May be yellowish or pale green.

What is spiny seaweed?

300

Looks like thin broccoli floret, or something that could efficiently apply shaving cream.

What is shaving brush algae?

300

Has flat, olive-brown fronds with smooth margins and blunt tips that fork into even branches of two.

What is dictyota?

300

Crushed skeletons of red algae(s) that are sources of beach sand.

What is thicket and branching coralline algae?

300

Grows in wiry, tangled yellowish-brown clumps. Branch tips frequently end in sickle hooks. 

What is hypnea?

400

Has slightly twisted, dark-green straps with slender stalks attached to rhizomes.

What is common caulerpa?

400

Washes ashore as individual or clustered green-brown bubbles that appear partially flattened.

What is balloon seaweed?

400

Green algae that makes up much of the coarse, white beach in the keys.

What is pulverized cactus algae?

400

Grows in large calm lagoons and often lives as unattached drift algae.

What is Graceful redweed?

500

Grow on nearshore reef out to 50ft.

What is green fleece algae?

500

Greenish-brown, fan-shape fronds with an in-rolled outer margin.

What is padina?

500

A single enormous cell, one of the largest known to science.

What is Sailor’s eye?

500

Have numerous bubble-like branchlets.

What is red grapes?

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