Epipelagic fish – эпилагическая рыба

predator fish – хищник

photic zone – световая, фотическая зона

phytoplankton  tophotosynthese – фотопланктоновый фотосинтез

forage fish school  - косяк рыбы для корма

Match two collomns to make words combinations:

water streamlined epipelagic plankton aquatic marine species

turbidity environment bodies zone habitat eaters diversity

Make your own sentences with these words.

Read the text again and answer the questions:

1. What is the difference between pelagic and epilagic fish?

2. Where does pelagic fish live?

3. What are the kinds of pelagic fish?

4. Where we can find pelagic fish?

5. Talk about living conditions of pelagic and epilagic fish.

Put the words in the correct order to make sentences:

1. ocean/clear/waters/food/that/are /contain/exceptionally/little.

2. epipelagic fishes/fisheries/valuable /form/the/world/most/in/the.

3. epipelagic fish/water/can/ be/ above/ continental/found/in/coastal/shelves/the. 

4. the epipelagic zone/is/the/surface/sea/the/water/from/the/of.

5. some zones/nutrients/ fish/lack/for/ supporting.

Read the extract and fill in the right words: predate, phytoplankton, water, organisms, abundant, fish, feeders.

Though the number of species is limited, epipelagic fishes are _______. What they lack in diversity they make up in numbers. Forage fish occur in huge numbers, and large fish that ________on them are often sought after as premier food ______ .

Many forage fish are facultative predators that can pick individual copepods or fish larvae out of the _______column, and then change to filter feeding on  _________ when energetically that gives better results. Filter feeding fish usually use long fine gill rakers to strain small _______ from the water column. Some of the largest epipelagic fishes, such as whale shark are filter ________ , and so are some of the smallest, such as adult sprats andanchovies.

23. Read the text and fill in the right word. Aquatic ecosystem

ecosystems, surface, salinity, organisms, source, production, seawater.

An aquatic ecosystem is an ecosystem located in water bodies. Communities of organisms dependant on each other and on their environment live in equatic ecosystems. The two main types of equatic ecosystems are marine ecosystems and freshwater ecosystems. Marine _______ cover approximately 71% of the Earth’s _______ and cotain 97 % of the planet’s water. They generate 32% of the world’s net primary________ . They are distinguished from freshwater ecosystems by the presence of dissolved compounds, especially salts, in the water. Approximately 85% of the dissolved materials in seawater are sodium and chlorine. _____ has an average _______ of 35 parts per thousands of water. Actual salinity varies among different marine ecosystems. Marine ecosystems can be devided into the following zones: oceanic (the relatively shallow part of the ocean that lies over the continental shelf); profundal (bottom or deep water); benthic (bottom substrates); intertidal (the area between high and low tides); estuaries; salt marshes; coral reefs; and hydrothermal vents (where chemosynthetic sulfur bacteria form the food base). Classes of ________ found in marine ecosystems include brown algae, dinoflagellates, corals, cephalopods, echinoderms and sharks. Fish caught in marine ecosystems are the biggest _______ of commercial foods obtained from wild populations.

water, reservoirs, sediments, species, rivers, fish, activity.