A crab is a marine question with a hard exoskeleton that is known to move in a diagonal, sideways direction. A crab may represent one with a hard outward appearance or one with a moody attitude.
Positive: Dreaming of a crab in a net full of fish could represent that God has given you a disposition to address large groups of people. Dreaming of a single crab or schools of crabs moving sideways could indicate that you are about to gain influence in a new community or group for evangelical or business purposes. Seeing a crab fighting with another creature could symbolize the need to be equipped with the armor of God.
Negative: In a dream, crabs could represent the spirit of cancer. It could also represent a person with an irritable, bitter, or moody attitude. If you eat crab in a dream and then become sick, it could be a warning to not engage in unclean activities.
(Matthew 24:14; Ephesians 6:11; Proverbs 27:17; Isaiah 50:7; Leviticus 11:10; Psalm 139:23; Job 23:2).