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en.wikipedia.org/wiki/Marine_life

Marine life, or sea life or ocean life, refers to the plants, animals and other organisms that live in ... Marine vertebrates must obtain oxygen to survive, and they do so in various ways. Fish have gills instead of lungs, although some species of fish, such as the lungfish, have both. Marine mammals, such as dolphins, whales, ...

www.thespruce.com/what-marine-fish-eat-in-the-wild-2923983

Dec 26, 2016 ... Once you understand what saltwater fish eat in nature, it is much ... ocean generally fall into one of three categories: Herbivores (plant ... The herbivore's digestive tract ends up digesting the bacteria, which do contain protein.

traveltips.usatoday.com/ocean-animals-eat-plants-61646.html

Other species such as pin fish and surgeonfish (also called tangs) also feed directly on seagrasses. So do some sea urchins, snails and other marine ...

www.sps186.org/downloads/table/93666/What%20Do%20Ocean%20Animals%20Eat?.pdf

Tiny planTs and animals called. plankTon are food for many ocean animals. PIankTon are a parT of The ocean food web. ... Many fish and krill eaT plankTon.

sciencing.com/list-herbivores-ocean-8599405.html

Apr 24, 2017 ... The oceans are home to a wide variety of fish and mammals--from the ... fish and mammals that eat both meat and plants and herbivores, fish ...

www.reference.com/pets-animals/ocean-fish-eat-2f6a1c54b43d3055

The dietary habits of fish differ from one species to another but, in general, some species are specifically herbivorous or carnivorous, preferring either marine plants or animals, ... Ocean fish also eat kelp, algae, detritus and plankton, as well as ...

www.flokka.com/fish-eat

Some kinds of fish eat small organisms and plant matter, whereas others are ... Mixed Diet: The fish of omnivorous category feeds at the ocean's bottom contains  ...

www.ducksters.com/animals/fish.php

What are gills and how do they breathe in the water? ... Some fish eat plant life. They may scrape algae off rocks or eat plants that grow in the ocean or sea.

news.bbc.co.uk/earth/hi/earth_news/newsid_8547000/8547332.stm

Mar 4, 2010 ... Deep sea fish like to eat their greens, gobbling up plants that have sunk thousands of metres to the ocean floor. Scientists have for the first time ...