You are thinking of a Harpoon.
how am i so post to konw
you mean a harpoon?
NO
Harpoon.
A harpoon, with a point like the moon, In skilled hands, it's cast and swoon, To catch the tides and spear the prey, By the light of the night, for the break of day.
Harpoon
because there are very very large number of animals in water as compared to land
The sperm whale is a large aquatic vertebrate. Seals also are large aquatic vertebrate.
A Speargun or Harpoon
This could possibly be a harpoon.
Yes they are real. They are tropical aquatic animals with large mouths in lizard-like heads.
Aquatic plants are able to photosynthesize and produce food for themselves and serve as a food source for other animals. Therefore, they are producers.
The Singapore Zoo has a large variety of aquatic animals on exhibit. One aquatic animal it has that has feathers is a duck.