Marine biologist Rick Steiner suggests that it does.

“I have been trying for some time now to get any data on the size of the oil droplets exiting the blowout before and during dispersant use,” he writes. “After considerable badgering by me, EPA finally provided droplet size data during/after dispersant use” — a range of 2.5 to 60 microns, he said.

Yet there are no data on how big the oil droplets at the spill site were before BP began applying Corexit, Mr. Steiner said. So how, he asks, is one to determine the impact of the dispersant?

“The physics of these high-pressure blowouts predicts that the droplet size will be quite small anyway, even without the use of toxic dispersants,” he said. “Thus it is questionable as to why they are adding dispersant without even knowing the effect.”

“It may be a violation of federal law to approve this activity without having this understanding,” he added.

Again, we urge you to join us in sending a clear message to your local, state and federal representative to ban the toxic Corexit now. A new post with detailed information on Bioremediation is forthcoming. We MUST unite to send a resounding message to those elected to represent us that one more day of using Corexit is UNACCEPTABLE.

Find your state representatives here (list is being updated, or search to find your own). Here is a link to contact the the White House, with pre-written letters to send to President Obama, and contact number for the EPA. And here is a sample letter you can use when writing your state governor. Use the text provided, write your own, it doesn’t matter. What matters is that you take action now!