If you follow this link it will take you to a ready prepared e-mail but you may need to spend a bit of extra time on this one as the HSUS ask you to add your own comments.
Here are some suggested additions:
The proposal will not save whales--it will kill them.
It will allow whaling in the Antarctic Southern Ocean Sanctuary.
It will stimulate new whaling markets rather than close out struggling subsidized industries.
The proposal is not based on sound science. The quota numbers used are based on politics.
The proposal does not address animal welfare issues.
The proposal was developed using a process that prevented civil society from having any input or role in the negotiations.
I had a bit of trouble with the link so if it doesn't work please e-mail me at email@example.com and let me know and I'll direct you to the page another way.