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

What type of large grows on nearshore reef out to 50 ft?

Green fleece

200

This type of algae live attached to hardbottom in shallow water, its very abundant in certain areas of the Florida keys.

Dictyota

200

These has a photosynthetic pigment that absorbs blue light, allowing the plants to live at greater depths than green plants.

Red alge 

200

The are unrelated to brown algae and somewhat related to green alge.

Red alge 

300

This type of algae looks like a smooth, turgid, dark-green, miniature water balloon.

Sailor’s eye 

300

This seaweed in beaches as individual or clustered, green-brow bubble-balls that appear partially flattened. 

Balloon seaweed

300

This type of algae have bitter chemicals to discourage grazing by fish. 

Iridescent-banded

300

This type of algae has brown-red branches with tiny, stiff, pointed branchlers in whorls of three.

Red spineweed

400

These species grow on reefs and seagrass pastures.

Caulerpa

400

These algae are all in the family sargassaceae. 

Brown algae

400

What is the toxic alien species from the tropics that invaded the Mediterranean sea and is causing big ecological troubles?

Caulerpa

400

This alge has greenish to bright-red formed branches like sinuous clumps of spaghetti, this algae quickly bleaches clear. 

Graceful redweed

500

These grow as chai s of calcareous segments attached to a stiff case and rhizoids.

Cactus algae

500

This type of algae live attached and float when free due to the air in their fronds

Three-cornered hat algae

500

What is the coarse white beach in the keys made of?

Pulverized cactus alge 

500

These grow on shallow hardbottom, branching coralline algae grow in shallow seagrass beds. 

Red grapes and thicket algae