Blue Light @ Night

[David B. Benson]

Coastal cities leave up to 75% of seafloor exposed to harmful light pollution
Mr Alan Williams
2020 Jul 30
Phys.org
phys.org/news/2020-07-coastal-cities-seafloor-exposed-pollution.html

Other studies show that modern LED outdoor lighting is harmful to nocturnal land animals, including insects. This study relates to sealife.

[David B. Benson]

Artificial night lighting has widespread impacts on nature
2020 Nov 02
Phys.org
phys.org/news/2020-11-artificial-night-widespread-impacts-nature.html

In this study, all colors of light.

[David B. Benson]

Light pollution at night severely disrupts the reproductive cycle of corals
2020 Nov 05
Phys.org
phys.org/news/2020-11-pollution-night-severely-disrupts-reproductive.html

Of course blue light is worse as it penetrates more deeply.