Its dense growth can outcompete native underwater vegetation, leading to loss of biodiversity.

Females lay 2,000-4,000 eggs in small masses attached to underwater vegetation.

The density of underwater vegetation also increases from the south to the mouth, so as the richness of the fauna.

Brown algae multiply at such rates that the marine waters turn the color of coffee, blocking sunlight and choking underwater vegetation.

Generally, toothcarps travel in small groups, staying near underwater vegetation, where they normally go unnoticed.

Potamogeton constitute the dominant underwater vegetation in the deeper parts, down to 14 m (some 45 ft).

Females lay 20 to 30 eggs; these are fertilized and tucked away in underwater vegetation one at a time by the males.

Manatees eat underwater vegetation, so no one is feeding them.

They are usually found among underwater vegetation in slow-running springs less than a meter deep.

If the underwater vegetation is thick, flatworms are likely to glide out in dozens and settle on the bait.