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

Spheres, looks like a smooth, turgid, dark-green, miniature water ballon.

What is Sailor’s eye (bubble algae)?

200

All live attached to hardbottom in shallow water.

Where does all brown algae live?

200

A habitat life-raft for hundreds of species of animals.

What does sargassum provide for marine animals?

200

Red grapes have numerous bubble-like branchlets.

What feature may grow in clumps attached to a shell or pebble?

300

Both Caulerpa species grow on reefs and seagrass pastures.

Where do Caulerpa species grow?

300

Dictyota is extremely abundant 

What is the most abundant brown algae in the Keys?

300

There is no distinction between individual cells, with direct connections of cytoplasm throughout plant.

What does it mean when algae is coenocytic?

300

In shallow waters with moderate wave surge.

Where do all red algae grow?

400

Made of pulverized cactus algae 

What is the white beach in the Keys made of?

400

Dictyota largely disappears  

What brown algae disappears in cold months?

400

A toxic species of caulerpa from the Tropics has invaded the Mediterranean Sea.

What is causing big ecological troubles?

400

Fragile, pale-pink branches with stubby branchlets

What is Spiny seaweed?

500

The family Codiaceae

Who are the relatives of Green fleece?

500

Branches connect to a tough holdfast. The longest branches have air bladders.

What is attached sargassum?

500

Red algae have a photosynthetic pigment that absorbs blue light.

What allows red algae to live at greater depths than green plants?

500

Contains sugar and protein for buoyancy so that strands remain upright in water

How do the bubble-branchlets and red grapes help with buoyancy?