Yes, "less toxic" doesn't mean it isn't toxic. It seems to me that any chemical dispersant would have some toxicity to life forms.

There is also the invention funded by Kevin Costner that uses a centrifuge to separate oil from water. There is still too much oil for this to be a complete solution.

Ocean Therapy invention


Today on the news report they say burning the marshes that are contaminated with the oil may be one way to treat the problem in the marshes.