They strongly contradict claims that wildlife, aquatic plants continue to suffer as a result of the spill.

NPR: Valdez: The Damage Persists, 17 Years Later

In the ponds and flooded areas, they're hoping for frogs, toads, newts, aquatic plants, damsel flies and dragonflies.

BBC: Little Ouse Headwaters Project restores Suffolk fenland

Because of its dense growth, it blocks sunlight from reaching the lake's native aquatic plants, which affects fish and other marine life-- and those who make their livelihoods catching them.

CNN: Flower power threatens Kenya's Lake Victoria

Minnesota: A law increases penalties for transporting certain aquatic invasive plants and animals.

CNN: July 1 brings new, sometimes quirky laws