Hi,
here two photos of Botryococcus.
They produce a yellow oil, making the algae look golden.
First an overview:
"Freestyle" lighting once more to get a nice blue/yellow contrast.
(Zeiss Standard, Planapo 40/0.95; S-Kpl 16x;
asymmetric Col with blue background;
slide film; one image)
The second picture shows a closer view:
(Zeiss Standard, Planapo 63/1.40; S-Kpl 10x;
asymmetric Col; slide film; one image)
Best Greetings
Jens