Weird images from algae culture - (Sep/02/2020 )

Hello all,

I recently grew some algea and took a few pictures of the foam visible in the culture.

I am wondering if I am simple seeing foam or a combination of foam and algae or ?

See pictures attached.

It looks like foam, but in some I can see something that looks like a nucleus. I am also wondering about the coloration. I guess the foam becomes green due to death algea?

thanks in advance.

Which species of alga and scale?

bob1 on Thu Sep 3 00:50:42 2020 said:

Which species of alga and scale?

Haha yes, I should have mentioned this.

It is a specials of chlorella and it is a 400X or 1000X image (middle one is 400X)

It looks like what you are seeing there are algal cells trapped by surface tension on the surface of the bubble/foam. The clearish object you can see in some of the pictures (e.g. at 10 o'clock position in image 3) looks like an interaction between the light-path and another bubble.

bob1 on Wed Sep 9 01:36:55 2020 said:

It looks like what you are seeing there are algal cells trapped by surface tension on the surface of the bubble/foam. The clearish object you can see in some of the pictures (e.g. at 10 o'clock position in image 3) looks like an interaction between the light-path and another bubble.

Yeah, that is what I also figured. 

I think it is indeed as you say, algal cells trapped in the fluid.