Scarborough Sea Life Centre said it had treated a number of birds and seals affected by the oil.

BBC: Finding source of Yorkshire oil deposits is 'unlikely'

And we're looking to increase production, as I said, so we can slowly close those vents and see how the containment cap is working and whether or not any oil is forced down by the pressure through the rubber seals, as we've talked about before.

WHITEHOUSE: Daily Press Briefing