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

Spongy, attached at a single holdfast. In the water it forms a domed clump.

What is green fleece algae?

200

Extremely abundant in certain areas of Florida, disappear in cold months.

What is Dictyota?

200

Sailors eye

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

200

Has fragile pale pink branches

What is Spiny seaweed?

300

live on shallow sea grass beds and sand flats

Where do Cactus algae and Shaving brush algae live?

300

Green-brown bubble-balls that appear partially flattened.

What is balloon seaweed?

300

Have bitter chemicals to discourage grazing by fish.

What is Iridescent banded algae?

300

Have reddish, flat, evenly forked branches rooted at a single holdfast.

What is Thicket algae?

400

4 inches long, looks like a thin broccoli floret. The growing algae are firmly anchored by their stiff stalk to a mass of rhizoids.

What is shaving brush algae?

400

Live attached and float when free due to air in their fronds.

What is three cornered hat algae?

400

Have photosynthetic pigment that absorbs blue light

What is Red Algae?

400

Grow on shallow hard bottom 

Where do red grapes and thicket algae grow?

500

It’s surface is occasionally covered with encrusting algae of other types.

What is bubble algae?

500

branches connect to a tough holdfast, leathery leaves covered by faint dots

What is attached sargassum?

500

provides a habitat life-raft for hundreds of species of animals.

What is Sargassum?

500

Grows in wiry, tangled yellowish brown clumps.

What is Hypnea?