Mooring buoys come in all shapes, sizes and colors (other than those colors used for navigational aids).
Warning colors prevent some animals from being eaten because their bright colors serve as a warning. The colors signify to predators that eating the animal will cause them to become ill or hurt.
it was because it was red and purple it was because it was red and purple
Red,Yellow and blue
Colors
Navigational charts show meteorological and hydrographic and navigational conditions.
Cuttlefish use warning colors to say stay away from me or to intimidate other animals
A warning color is a color that an animal uses to warn enemies that it is not safe to eat. Most animals that use color as a defence attempt to blend into their environment as much as possible (camouflage). Warning colors are the opposite. Animals displaying warning colors are bright and stand out. They are sending the message 'look at me, I don't need to hide from you because I know you can't hurt me.' Most animals display these warning colors to declare that they are poisonous and should never be eaten. Some animals display bright colors that appear to be warning colors, yet they are not poisonous. These are imitators - by pretending to be poisonous they can often deter most predators without going to the effort of producing venom.
Warning colors are typically bright and eye-catching, such as red, orange, and yellow. These colors are used in signs, symbols, and signals to alert people to potential hazards or dangers, prompting them to exercise caution or take necessary actions. The high visibility of warning colors helps to quickly communicate potential risks and prevent accidents.
The navigator led the pirates to pure success.
This street map is a very handy navigational aid. This channel buoy is the navigational aid that saved my life!
one sentence with navigational can be Mr.Bundles job included navigational work