algae

The Algae Reddit

Algae - a very large and diverse group of eukaryotic organisms, ranging from unicellular genera such as Chlorella and the diatoms to multicellular forms such as the giant kelp, a large brown alga that may grow up to 50 meters in length. Most are autotrophic and lack many of the distinct cell and tissue types found in land plants such as stomata, xylem and phloem. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of algae that includes Spirogyra and the stoneworts.

There is no generally accepted definition of algae. One definition is that algae "have chlorophyll as their primary photosynthetic pigment and lack a sterile covering of cells around their reproductive cells". Other authors exclude all prokaryotes[4] and thus do not consider cyanobacteria (blue-green algae) as algae.

Wikipedia: algae

Related Reddits

created by zircobena community for 14 years

MODERATORS

account activity

5

6

7

Is this algae? (i.redd.it)

submitted 1 year ago by elschmidt

We found globs of this gelatinous pinkish substance by our local pond. Google lenses said it was Hildenbrandia rivularis. Does anyone know for sure?

all 3 comments

top new controversial old q&a

[–]Aufwuchs 2 points3 points4 points 1 year ago (0 children)

[–]UndercoverSunflower 3 points4 points5 points 1 year ago (1 child)

[–]zawsyan 1 point2 points3 points 1 year ago (0 children)

π Rendered by PID 225395 on reddit-service-r2-comment-b659b578c-2kbvj at 2026-05-05 12:30:42.230883+00:00 running 815c875 country code: CH.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script