Ocean organisms

6. a shoreline area where fresh water from a river mixes with salt water from the ocean
9. a property of matter representing the mass
11. the catching of fish at a faster rate than they can reproduce
14. the movement of water from the surface down to greater depths
15. the vertical movement of deep water to the surface
16. the periodic rising and falling of the water level of the ocean due to the gravitational pulls of the moon and sun
19. the overall direction and movement of water as waves strike the shore at an angle
20. a narrow stream of water that breaks through sandbars and drains rapidly back into deeper water

1. an opening in the sea floor from which heated water rises and mixes with the ocean water above
2. a built up limestone deposit formed by an ant sized organism called corals
3. a tide of small range occurring during the first and third quarter phases of the moon
4. microscopic floating organisms that live in water and like plants convert sunlight and carbon dioxide into food
5. the natural environment in which living things gets all that it needs to live
7. current a mass of moving ocean water
8. a system that uses underwater soundwaves to measure distance and locate objects
10. the measure of the amount of dissolved salt contained in water
12. a large community of kelp, a type of seaweed that can attach to the ocean floor
13. the narrow ocean margin between the high tide mark and the low tide mark
17. a tide of large range occurring during the new and full moons. Resulting in extra high tidal bulge and an extra low tidal dip
18. a wet swampy area that is often flooded with water