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

Has long pale yellow rhizomes with green branches that bear stubby branchlets that end in swollen tips.

What is Grape caulerpa?

200

Beaches as individual or clustered, green-brown bubble-balls that appear partially flattened.

What is balloon seaweed?

200

A single enormous cell, one of the largest in science.

What is Sailors eye?

200

Has brown-red branches with tiny, stiff, pointed branchlets in whorls of three.

What is Red spineweed?

300

A smooth, dark green water balloon like sphere.

What is Sailor’s eye?

300

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

What is Padina?

300

A white beach in the Keys made up of this pulverized algae.

What is cactus algae?
300

Has fragile, pale-pink branches with stubby branchlets. Colors also may be yellowish or pale green.

What is Spiny seaweed?

400

Has long, forked, spongy dirty green fingers attached at a single holdfast.

What is Green fleece?

400

Beach as golden bouquets of pyramid-shape fronds. The algae live attached and float when free due to the air in their fronds.

What is Three-cornered hat algae?

400

As it drifts, ______ provides a habitat life-raft for hundreds of species of animals.

What is sargassum?

400

Have numerous bubble-like branchlets. Several lengths with individual holdfasts may grow in clumps attached to a shell or pebble.

What are Red grapes?

500

Looks like a thin broccoli floret.

What is Shaving brush algae?

500

Has smooth, brown, elongate, leathery leaves covered by faint dots. Branches connect to a tough holdfast. The longest branches have air bladders.

What is Attached sargassum?

500

This color algae all live in shallow water.

What is Red Seaweed?

500

Red grapes and ______ grow on a shallow hardbottom.

What is thicket algae?