Science Struck
Science Struck: Understanding the Ocean Ecosystem
Describes the two organisms capable of photosynthesis in an ocean ecosystem, the different ocean zones and the plants and animals that live in them, some facts about the ocean, and the five oceans of the world.
McGraw Hill
Glencoe Biology: Aquatic Ecosystems: Self Check Quiz
Try these five multiple-choice questions about aquatic ecosystems. After answers are submitted, students can review their mistakes.