If you have seen a spider in the sea in your dream: Not thinking realistically or acting stubbornly may harm some of your relationships or health, you may have a tendency to get impatient about a subject you are working on. To see a spider in the sea in your dream indicates that you will work hard, add to your wealth, have a rich and beautiful life, every wish will come true and happiness will be permanent. If a spider stings in the sea in your dream, it means a difficult life, loss of office, poverty, and unrest.