| A | B |
| salintiy | the total amount of dissolved salts in the ocean water |
| phytoplankton | plantlike living creatures that live near the surface of the ocean |
| zooplantkton | animal like tiny living organisims that live near the surface of the ocean |
| sediments | do not dissolve in water, washed into the ocean or stirrd up from the bottom, ex. sand particles, bits of shell, and decaying organisms |
| SCUBA | self contianed underwater breathing apparatus |
| the bends | a condition caused by decreasing water pressure forming nitrogen bubbles in their blood and other tissues |
| temperature | a measure of the average kinetic energy of the particles in matter |
| starfish | a member of the benthos group of ocean organisms |
| benthos | a group of ocean organisms, plants and animals, that live on the ocean floor and do not swim |
| nekton | Allthe free-swimming animals that live in he ocean |
| density | the distribution of a quantity (as mass, electricity, or energy) per unit usu. of space (as length, area, or volume) |
| shellfish | an aquatic invertebrate animal with a shell; especially : an edible mollusk or crustacean |
| food chain | an arrangement of the organisms of an ecological community according to the order of predation in which each uses the next usu. lower member as a food source |
| octopus | any of a genus of cephalopod mollusks that have eight muscular arms equipped with two rows of suckers; broadly : any octopod excepting the paper nautilus |
| evaporation | to convert into vapor; also : to dissipate or draw off in vapor or fumes |
| gases | fluid (as hydrogen or air) |