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Open Ocean Ecosystem

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by

Audrey Worboys

on 15 February 2013

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Transcript of Open Ocean Ecosystem

Background photo by t.shigesa The Open ocean is very big. Diving Deep Nekton. Scratching the Surface The Open Ocean What are plankton? Zooplankton are tiny invertebrates that float freely throughout the seas and other bodies of water

Phytoplankton, are like terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow

Meroplankton are the portion of the plankton found only a part of the time at or near the surface Fish of the open ocean Marlins, swordfish, and sailfish make up the family known as billfish. They use their long sharp bills to hunt for food and stun prey. They are considered apex predators. The leatherback sea turtle is the largest of all living turtles. It can weigh upwards of 2,000 pounds and have a lifespan of around 45 years. The epipelagic zone is between 2-1,000 feet in depth Hold on! What does this word mean? Any water in the sea that is not close to the bottom or near to the shore is in the pelagic zone The photic zone is anywhere the sun penetrates through the water It covers about 70% of the oceans and only very strong swimming fish may live out here. But what about the jellys? They're zooplankton. Mastigas jellyfish swimming. This is a crown jellyfish. Box jellyfish have a very powerful sting This is the Giant Nomura Jellyfish This is the Australian Spotted Jellyfish This is a lion's mane jellyfish. Lastly, this is a blue jellyfish Diatoms are single-celled alga with a silica wall Copepods are marine or freshwater organisms with six legs attached to a thorax Fun Fact: Copepod's brother, Isopod, is sometimes used as a pet! What are nekton? Nekton are fresh or saltwater organisms that can swim freely and are generally independent from currents In the 1930s, the Royal Norwegian navy's 15,000-ton tanker, the Brunswick, was attacked three separate times by giant squid Is it a legend? Squid are invertebrates They come in all shapes and sizes The most infamous being... Tuna come in all shapes and sizes and are known for their speed and agility in the water. They range from big, such as the Atlantic Bluefin To as small as the bullet tuna. Yellowfin tuna is found in the pelagic waters of the ocean and are popular amongst seafood lovers in making shashimi Tuna are able to take in large amounts of oxygen
They have 30 times the gill surface of other fish, which allow them to extract half of their excess oxygen
Their hearts pump blood about three times as fast as normal fish.
Tuna cannot stop swimming or else they'll suffocate
They have hearts ten times the size of normal fish, relative to their body weight Sharks Sharks such as the great white, maco tiger shark, whale shark, and basking shark are all part of the open ocean ecosystem. Mola Mola Flying Fish "Flying fish live in all of the oceans, particularly in tropical and warm subtropical waters. Their most striking feature is their pectoral fins, which are unusually large, and enable the fish to hide and escape from predators" Mutualism- A symbiotic relationship would be a cleaner fish who cleans the inside of the mouth of a big fish knowing they won't be eaten
Parasitism- Some of the known types of parasitic species include isopodes who attach themselves in the fish while feeding or drains their body fluids.
Commensalism- Remora find its food from the sharks left over food and the shark isn’t bothered at all. Our impact. What is an example of a commensalism relationship?

How much of the oceans are untouched by humans?

What is the smallest tuna species?

How do tuna breathe?

What are plankton?
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