marine – Having to do with the ocean world or environment.

marine ecologist – A scientist who studies the ocean’s ecology

plastic trash – scientists estimate the seas contain about 5.25 trillion pieces of this trash. Its combined weight: an estimated 269,000 metric tons.

  • Fish and other marine organisms can ingest tiny plastic fragments. This trash can then move up the food chain as seabirds, seals and other marine predators eat those fish.
  • plastics can work like sponges, soaking up and storing toxic chemicals. These include PCBs, pesticides and flame retardants. When ingested, such plastic can release the pollutants, triggering health problems.
  • ocean plastics also provide homes for germs, some of which can cause disease.

That’s engineering

  • toxic – Poisonous or able to harm or kill cells, tissues or whole organisms. The measure of risk posed by such a poison is its toxicity.
  • organism – any individual animal, plant, bacterium, etc. having various parts or systems that function together as a whole to maintain life and its activities
  • disphoticzone – the middle ocean zone that receives very little sunlight and contains no plants and few animals
  • intertidal – having to do with the area of a seashore between the high-tide mark and the low-tide mark
  • oceanographic – having to do with the study of oceans, including their water, biology and geology
  • estuary – the part of the river where fresh water mixes with the ocean\’s salt water

Engineering ideas

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Do It
Challenges for you to work on…