Pink
The lions mane jellyfishs' status has not been listed by the IUCN
Well, I'm guessing no. They just kinda float around, no need for senses.
Large types of jellyfish's can reach 8 feet diameter, with tentacles reaching 150 ft long.
Coloration is not a behavior, it is an adaptation. Warning coloration is an example of defensive behavior.
coloration having a protective function; sometimes used in a restricted sense for warning coloration only.
Scientists do not know much about dinosaur coloration. We only know the coloration of a few types of small, feathered dinosaurs, some of which had bright coloration.
There are some documented "lost" technologies developed by the alchemists. Examples include flexible (bendable) glass and methods for coloring metals through (not just surface coloration, as in anodized aluminum).
geese are not poisonous or otherwise dangerous, so their coloration is not warning away other animals. They do have predators though, so their coloration is for camouflage.
They have disruptive coloration.
Pink glass is often made using gold chloride or selenium as coloring agents, as they can produce a pink hue when added in small amounts during the glassmaking process. Other elements commonly found in pink glass include silica (from sand), soda ash (sodium carbonate), and lime (calcium oxide) as the main components of the glass. Additionally, trace elements from impurities in the raw materials or from the manufacturing process may also contribute to the coloration of pink glass.
Aposematic coloration (also known as warning coloration) is the conspicuous coloration of some animals, such as skunks and poison arrow frogs, that serves to warn potential predators of the harm that would come from eating the animal.
Bed bugs are not green; they typically have a reddish-brown coloration.