Across
- 3. pore bearing
- 6. filters food from the water
- 8. larva that swim freely
- 9. resistant sponge fibers
- 10. feeds on particles suspended in water
- 13. not the same on each side
- 14. tube like cell
- 15. lives attached to the bottom of the ocean
Down
- 1. spineless
- 2. release of eggs into the water
- 4. a transformation in somethings life
- 5. moving cells
- 7. food trapping cell
- 11. small glass spikes
- 12. the largest opening on a sponge