Aquarium Web Quest for Gr. 4 - http://www.oceanofk.org/webquests/fish/index.html  It looks appropriate for gr. 3’s as well!

Monterey Aquarium - Sea Star Investigations - http://www.mbayaq.org/lc/teachers_place/activity_seastar.asp?bhcp=1 Excellent site! You have to follow the links on this page to reach all the delicious tendrils... especially Sea Star in Splash Zone.

Dolphins Web Quest for Gr. 3 -http://www.allabery.com/courses/webquest/devita/index.html

DLTK's Online Sea Jigsaw Puzzles -
http://www.dltk-kids.com/puzzles/category.asp?cat=Ocean

Gray Whales Web Quest - http://projects.edtech.sandi.net/encanto/graywhale/ Gr. 3 and up.

Shark Surfari - http://www.nationalgeographic.com/features/97/sharks/ Online quiz by National Geographic