Across
- 3. Invertebrates that have spiny skin
- 4. photosynthetic organisms that are not like plants and are generally found in aquatic or moist habitats
- 5. ZONE The lowest ecological zone in the ocean or sea floor
- 8. A herb used for its medicinal properties in general to get health benefits
Down
- 1. Sea cucumbers propel this organ to snare the predators away
- 2. Structures that help a sea cucumber to move and feed
- 6. Invertebrates that look like a big slug
- 7. A diverse group of microorganisms which are a crucial source of food for aquatic organisms