What's the difference between algae and toxic algae?

Toxic algae is invading Canada’s lakes. This early warning system could help

藍藻はなぜ危険なのでしょうか?—化学といえば

有毒藻類ブルームとは何ですか?

Toxic algae bloom threatens Florida waters

Experts discuss health effects from toxic algae blooms

If You Plan To Recreate In Colorado Waters, Beware Of Toxic Algae

Qld toxic algae research gets world attention

Eye on Earth: Ian runoff fueling toxic algae bloom along Florida coastal areas

Toxic blue-green algae advisory

Toxic algae engulfs Latin America’s largest lake

Can you spot toxic algae?

Toxic Algae in Florida's Everglades: What Went Wrong? | Battleground Everglades

Toxic algae bloom

Toxic blue-green algae in Lake Okeechobee draws concern

有毒藻類の開花

Toxic Algae Bloom Impacts Marine Life

Toxic Algae - Effects on Marine Life

Arizona dog parents warned about potential of toxic algae in ponds

Toxic algae poses danger to dogs