Net income slipped to $85.4 million or $1.63 per share compared with $87.6 million or $1.56 per share, a year earlier.

Tidewater stock (TDW: chart) fell $7.17 to $57.82.

White Mountains Insurance Group, Ltd, property and casualty insurer today reported total revenues for the first quarter of 2008 declined 34% to $937.9 million compared to $1,166.1 million a year ago.

Net loss in the quarter was $56.8 or $5.40 diluted earnings per share compared with net income of $92.2 million or $8.54 per share a year ago.

Book value in the quarter was essentially unchanged to $443.05 compared to $444.47 in the fourth quarter of last year and increased 9% to $414.61 from the first quarter of 2007.

White Mountain stock (WTM: chart) fell $20 to $469.81.

Whiting Petroleum Corporation, an independent oil and gas company engaged in acquisition, development, exploitation today reported first quarter of 2008 revenue rose 65% to $264.1 million from $159.9 million in the first quarter of 2007.

Net income increased to $62.3 million or $1.47 per share compared with $10.7 million or 29 cents per share, in the year-ago period.

Whiting Petroleum stock (WLL: chart) fell 15 cents to $76.81.