# Algae (*Chlorophyta*)

Algae are tiny plants that live in water and make food from sunlight, just like trees do on land. They come in many colors like green, red, and brown, and provide homes for small water creatures.

- **Category:** [Plants](https://www.snappit.app/explore/categories/plant)
- **Rarity:** Common
- **Danger:** 2/5 · Low
- **Habitat:** Aquatic
- **Also known as:** Chlorophytes, Green Algae

![Algae](https://inaturalist-open-data.s3.amazonaws.com/photos/57757074/medium.jpg)

Photo: Aleksandr Novikov, CC BY 4.0 · [iNaturalist](https://www.inaturalist.org/photos/57757074)

## Appearance

The Algae is incredibly diverse, appearing as tiny green films, long brown strands, or complex red fronds. It can form slimy coatings on rocks or large, leaf-like structures swaying in the water, often vibrant green, brown, or red.

## Taxonomy

- **Kingdom:** Plantae
- **Phylum:** Tracheophyta
- **Class:** Magnoliopsida

## Interesting facts

- Algae can even live inside animals like corals, helping them get food to survive!
- Some algae can make entire bodies of water look like bright red or green soup!
- The largest algae, kelp, can grow as tall as a 20-story building underwater!
- Tiny algae create most of the oxygen you breathe on Earth, helping us all live!

## Special abilities

- **Sun Power!:** Algae can harness sunlight using chlorophyll, turning light energy into food for themselves and oxygen for others.
- **Fast Spreader:** Algae has specialized spores or can fragment, allowing it to multiply quickly and spread across water bodies.
- **Glow-in-the-Dark:** Some Algae can glow! They produce light through a chemical reaction, lighting up ocean waves at night.

## Measurements & details

- **Height:** 0.01-6000 cm
- **Spread:** 0.01-6000 cm
- **Bloom Season:** Year-round
- **Edible:** Yes
- **Toxicity:** Moderate
- **Lifecycle:** Perennial
- **Pollination Method:** Water

## Ecological connections

- **Eats:** [Human](https://www.snappit.app/explore/human) (*Homo sapiens*) — Many algae species are harvested and consumed by humans.
- **Eats:** Purple Sea Urchin (*Strongylocentrotus purpuratus*) — Sea urchins graze on various types of algae found on the seafloor.
- **Symbiotic with:** Elkhorn Coral (*Acropora palmata*) — Tiny algae called zooxanthellae live inside corals and provide food.
- **Depends on:** [Humpback Whale](https://www.snappit.app/explore/humpback-whale) (*Megaptera novaeangliae*) — Whales rely on krill, which in turn feed on vast amounts of algae.

## Traits

- [Nonvascular](https://www.snappit.app/explore/traits/nonvascular): This trait characterizes plants lacking specialized vascular tissues (xylem and phloem) for transporting water and nutrients.
- [Spore Producing](https://www.snappit.app/explore/traits/spore-producing): Spore-producing organisms reproduce by releasing small, often single-celled, reproductive units called spores.
- [Symbiotic](https://www.snappit.app/explore/traits/symbiotic): Describes a relationship between two different species where they live in close association, often benefiting one or both.
- [Ancient Lineage](https://www.snappit.app/explore/traits/ancient-lineage): This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years.
- [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands.

## Collections

- [Fungi](https://www.snappit.app/explore/collections/fungi)
- [Plants](https://www.snappit.app/explore/collections/plants)

## Safety

**Danger:** 2/5 · Low

Avoid touching algae in the wild as some types can be harmful. Always explore with an adult.

## Frequently Asked Questions

### How to identify Algae?

Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details.

### How tall is Algae?

0.01-6000 cm

### How wide does Algae spread?

0.01-6000 cm

### When does Algae bloom?

Year-round

### Is Algae edible?

Yes

### Is Algae toxic?

Moderate

### What is Algae's lifecycle?

Perennial

### How is Algae pollinated?

Water

## More Plants

- [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*)
- [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*)
- [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*)
- [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*)

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Source: [Algae: Characteristics, Facts & Places to See — Snappit](https://www.snappit.app/explore/algae)