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

Surface is occasionally covered with encrusting algae of other types

What is Sailor’s eye?

200

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

What is Dictyota?

200

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

What is Sailor‘s eye?

200

Where red grapes and thicket algae grow 

What is Shallow hard bottom?

300

Looks like a thin broccoli floret 

What is Shaving brush algae?

300

Individual or clustered, green-brown bubble-balls that appear partially flattened 

What is Balloon seaweed?

300

It’s bubble-branchlets contain sugars and protein for buoyancy so that strands remain upright in water 

What is Red grapes?

300

Quickly bleaches clear

What is Graceful redweed?

400

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

What is Common caulerpa?

400

Beach as golden bouquets of pyramid-shaped fronds

What is Three-cornered hat algae?

400

Have a photosynthetic pigment that absorbs blue light

What is Red algae?

400

Grows in wiry, tangled yellowish-brown clumps 

What is Hypnea?

500

Has forked, spongy, bright to dirty green fingers attached at a single holdfast

What is Green fleece?

500

Long, has smooth, brown, elongated, leathery leaves covered by faint dots 

What is Attached Sargassum? 

500

Provides a habitat life-raft for hundreds of species of animals as it drifts 

What is Sargassum?

500

May grow in clumps attached to a shell or pebble 

What is Red grapes?