In the Chandeleur Sound on Monday, about 40 miles northeast of Venice, thick, heavy oil was slicked in long clumps that looked like raw sewage. Several sick and dying jellyfish could be seen in the water.
A dolphin surfaced nearby but did not appear to be in distress as rain fell over the scene.
Charter boat captain Bob Kenney looked across the oil streaming in as rain fell. The oil was drifting northward toward the Chandeleur Islands and the Mississippi coast.
"This rain is mother ocean crying because of all this oil in her," said charter boat captain Bob Kenney. "This is what makes me cry."
BP CEO Tony Hayward said Monday on ABC's "Good Morning America" that BP was not responsible for the accident. He said the equipment that failed and led to the spill belonged to owner Transocean Ltd., not BP, which operated the Deepwater Horizon rig.
Guy Cantwell, a Transocean spokesman, responded by reading a statement without elaborating.
"We will await all the facts before drawing conclusions and we will not speculate," he said.
A board investigating the explosion and oil leak plans to hold its first public hearing in roughly two weeks. The cause of the April 20 explosion, which killed 11 workers, has not been determined.
Coast Guard Capt. David Fish, chief of the Washington-based Office of Investigations and Analysis, said the six-member board -- three from the Coast Guard and three from the U.S. Minerals and Management Service -- will likely meet in the New Orleans area and take testimony from experts and workers who survived the disaster.
"We want to get it public because that's just what our rules are and while everything is fresh in everyone's mind, particularly with the witnesses," he said.
Meanwhile, Hayward said chemical dispersants seem to be having a significant impact keeping oil from flowing to the surface, though he did not elaborate.
The update on the dispersants came as BP was preparing a system never tried to siphon away the spill of crude from a blown-out well a mile underwater. However, it will take at least another six to eight days before crews can lower 74-ton concrete-and-metal boxes being built to capture the oil and siphon it to a barge waiting at the surface.
That delay could allow at least another million gallons to spill into the Gulf, on top of the roughly 2.6 million or more that has spilled since the April 20 blast. Those numbers are based on the Coast Guard's estimates that 200,000 gallons a day are spilling out, though officials have cautioned it's impossible to know exactly how much is leaking.
By comparison, the tanker Exxon Valdez spilled 11 million gallons off the Alaska coast in 1989.
Crews continued to lay boom in what increasingly felt like a futile effort to keep the spill from reaching the shore, though choppy seas have made that difficult and rendered much of the oil-corraling gear useless.
In Pensacola, Florida Gov. Charlie Crist characterized the spill as "sort of an underground volcano of oil." He said Monday that BP was responsible for the cleanup and added "we'll be more than happy to send them the bill."
Everything engineers have tried so far has failed to stop the leak. After the explosion, the flow of oil should have been stopped by a blowout preventer, but the mechanism failed. Efforts to remotely activate it have proven fruitless.
The oil could keep gushing for months until a second well can be dug to relieve pressure from the first.
Many coastal communities are desperate to keep the slick away from their beaches. One person had a suggestion at a BP town hall meeting held in Navarre, Fla., however.
"Would it be possible to just go out there and bomb the hell out of it?" said Kenny Wilder, 67, of Navarre.