US /'kaʊntəʃeɪdɪŋ/
・UK /'kaʊntəʃeɪdɪŋ/
This countershading helps it blend in with its environment,
This type of coloring is called countershading.
Their tuxedo appearance is called countershading
And then his countershading camouflage is really interesting.
A type of camouflage, known as countershading gives these sharks the predatory edge.