How to Share Photos in Bulk
Highlight the photos your want to share with people. Then, right-click and Share > iCloud Photo Sharing.
Click New Shared Album, and then rename the Album. Then you can add your recipients' email addresses separated by commas, and add a message to them. Press Create.
Your Album is now viewable under Shared.
You can modify the Album name, add recipients, etc, by clicking on the head icon. Make your Album a Public Website so even recipients without an Apple product can view the photos.
On the recipient side...
All they have to do is open their email, click the Subscribe button, and then click View This Album on the Web. They should be able to view the album in their browser.