Hayden Panettiere – the Heroes star and outspoken activist for the Save the Whales Again! campaign – is auctioning off the chance to join her on an ocean voyage.
The auction – now open on eBay and running through May 30th – includes dinner and drinks for six at Eva Longoria's Beso restaurant during a celebrity fund-raiser in Hollywood on August 10.
In the next few days, the winner and five guests will spend a morning with Panettiere, 18, on a private whale watching tour off the coast of Santa Barbara, Calif. (They'll also receive a $1,000 American Express gift card.)
After just one day, bidding had already reached $4,180.
Proceeds will got to the Save the Whales Again! campaign. As Panettiere – who recently won an award for her work with the charity – says on eBay, "You can make a huge difference for these wonderful animals."