Friday, November 22, 2013
Favorite Cephalopod
My favorite cephalopod would be Squids. The scientific name for a squid is Teuthida. The squids posses the same reproductive organs of humans. They mate normally also. Though after mating, the male dies shortly after. And the female dies after laying the eggs. She lays the eggs in egg shells for protection. They're anchored to the sea floor with other squid eggs; which the egg clumps look like flowers. Squid habitats: Some of them thrive in the warm tropic waters while others do much better in water that is at a lower temperature. You will find squid in just about all the major bodies of water found out there. They prefer salt water over fresh water. The squid will feed on small crustaceans and smaller fish. But humans prey on squid and larger sea creatures such as whales or sharks. The thing that makes squids special is their ability to change color or disguise. They will turn white when they need to look more aggressive to another male when fighting for a female. Interesting facts about squids: Squids have 3 hearts. The Big Fin Squid has 10 arms, not 8. Most live about a year.
Monday, November 18, 2013
Marine instrument
The Automatic Identification System (AIS) is an automated
tracking system used on ships and by Vessel Traffic Services (VTS)
for identifying and locating vessels by electronically exchanging data
with other nearby ships and VTS stations. AIS transponders use two
different frequencies, VHF maritime channels 87B (161.975 MHz) and
88B (162.025 MHz). SCOUT has designed the KS-30 antenna to be
tuned on the AIS frequencies. Perfectly suited to the AIS radar and AIS Engine.
tracking system used on ships and by Vessel Traffic Services (VTS)
for identifying and locating vessels by electronically exchanging data
with other nearby ships and VTS stations. AIS transponders use two
different frequencies, VHF maritime channels 87B (161.975 MHz) and
88B (162.025 MHz). SCOUT has designed the KS-30 antenna to be
tuned on the AIS frequencies. Perfectly suited to the AIS radar and AIS Engine.
Plankton
Plankton are important because small fish, whales, and zooplankton eat it as regular food. And if phytoplankton didn't exist, those larger fish that eat the animals who eat the phytoplankton, would die out. They have adapted to make food and nutrients from the sun and the way they move in the water is adaptations.
Sunday, November 10, 2013
Favorite shark
I already posted about the Great White Shark, which is definitely my favorite and most intriguing shark. So I'll post about my second favorite, the Bull Shark!
Scientific name: Carcharhinus leucas
Found in: Amazon River, Lake Nicaragua (can live in salt or fresh water
Reproduction: they mate in the late summer/early autumn. Pregnant for 12 months. Can have 4-10 pups.
Predator/prey: Bull's eat mostly honey fish and sharks. Also includes turtles, birds, dolphins, etc. and humans catch and kill Bull Sharks.
Adaptations: 1. adapted to live in freshwater 2. Has cartilage (no bones) 3. Have 2 dorsal fins.
Endangered/threatened?: they're near threatened. Why? Humans are catching them and not releasing them alive.
3 facts: 1. Traveled as far up the Mississippi River as Illinios 2. Most responsible for near-shore shark attacks on humans, not great whites 3. Extremely territorial.
Friday, November 1, 2013
Oceanographer
If I had to choose a oceanographer job, it would be a shark researcher.
1. I've always had an interest in sharks
2. Sharks is one marine animal that is mysterious
3. You get to dive underwater with the sharks to observe them in shark-proof cages
4. You can also free dive and touch some if you get lucky
5. Just the ability to dive and touch/feed a shark to figure them out more would be the most amazing feeling
Favorite marine animal: Great White Shark
The great white shark's scientific name is :Carcharodon carcharias.
Habitat: coastal surfaces of waters of all the major oceans. The temp of water they live in is between 54-75 degrees F.
Reproduction: they become sexually mature between 8 and 15 years of age. They reproduce internally. The males bite the females to hold them down while mating. The females are pregnant for 18 months.
Predator/prey: largest known macropredatory fish. Most primary predator of the marine animals. Preys on: variety of marine animals (fish and sea birds and seals). On record as having the most attacks on humans. Humans do fish for them for their fin. Used for fish fin soup in china.
Endangered or threatened? It's unknown.
Ocean issues affecting the shark: hill nets used for fishing in Baja, Mexico mainly.
3 interesting facts:
1.) shark meat is not recommended for human consumption die to the high levels of mercury in the meat.
2.) their livers can weigh up to 24% of their entire body weight.
3.) they may use and lose up to 1,000 teeth in its lifetime.
Bob Ballard
Five facts about the ocean I didn't know:
1.) more exploration in the Southern Hemisphere during Captain Cook's time, rather than current day.
2.) there's better maps of mars than out own.
3.) ocean ridge covers 20% of the world.
4.) Rift Valley is 9,000ft in depth.
5.) more active volcanos under the sea, than above it.
+3 more facts:
6.) seashells are on Mt. Everest.
7.) lost city is made up of leaf and had pH of 11.
8.) methan volcanos in Gulf of Mexico.
Why I think Bob Ballard thinks it's important to explore the ocean: I think his reasoning is because the ocean makes up most of this planet and it's important to explore it to find out what lies beneath.
His main message: to explore the ocean and maybe end up building structures on the water for human life to inhabit.
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