Monday, 19 May 2014

Threats and conservation of Box Jellyfish

Global warming is a threat to Box jellyfish. The place they live in is too polluted and this affects them causing them to move to other places that might not suit them.

We have to reduce the amount of pollutions so that the Box jellyfish, as well as other marines, will not be threaten.

Conservation and Threats of Fire Corals

Conservation and threats of fire corals

Fire corals face the many threats impacting coral reefs globally, including poor land management practices releasing more sediment, nutrients, and pollutants into the oceans and stressing the fragile reef ecosystem.

Overfishing has ‘knock-on’ effects and fishing using destructive methods physically devastates the reef. A further potential threat is the increase of coral bleaching events, as a result of global climate change.

Most fire coral species have brittle skeletons that can easily be broken, for example, during storms, or by divers when diving for leisure, or when collecting fish for the aquarium trade. For instance, the yellowtail damselfish (Chrysiptera parasema) tends to dwell close to the branching fire coral colonies, and retreats into its branches when threatened. In Brazil, fire coral colonies are extensively damaged when harvesting the yellowtail damselfish, as the corals are often deliberately smashed and fishes hiding among the branches are ‘shaken out’ into plastic bags.

Sunday, 18 May 2014

conservation and threats

The following introduce some of the ways we take forward our understanding and activities in support of the conservation and enhancement of the natural environment.
  • Designations , areas under long term protection for their national significance/value in conserving species, habitats, geology and/or landscape) and  not pollute the sea so as to not make the sa pens lose their habitat  and also prevent Areas of stable muddy seabed, where animals burrow below and sea pens protrude from the surface.

Friday, 28 March 2014

Box Jellyfish

In Hawaii, box jellyfish numbers peak approximately 7 to 10 days after a full moon, when they come near the shore to spawn. Sometimes the influx is so severe that lifeguards have closed infested beaches, such as Hanauma Bay, until the numbers subside.
SEA ANEMONE 

BOX JELLYFISH

HYDRA




Wednesday, 26 March 2014

sea pens

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when it is touched 




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a sea pen 

SEA  PENS 
description 

-sea pens are named after their feather like appearance. sea pens are a colonial animals with multiple polyps . Each with eight tentacles . Sea pens  vary in colour from white to creamy yellow.

kingdom 

-animals 

plylum 
-cnidara 

Life span 

- Seapens have a life spam of up to 15 years 

Diet 

-Seapens feeds on small zooplankton organisms 

Interesting facts 



1)  When they are touched or provoked they actually glow , giving off a bright light . This is also known as bioluminsceues 

2)  Seapens are able to change their loacation . They usually change their location to move themselves in the direction of the current flow in order to ensure a steady source of plankton( source of food)

Importance in ecosystem 

 - Without the seapens survivial the eco system of the seapens food web will cause an unbalance and affect the entire ecosystem。 

Food Chain

planktons ->sea pens ->Sea stars -> sea turtle -> sharks 

Habitat

- They live in very fine sendiments (muddy sand to fine sand) and are usually found in sheltered inshore waters or deep water inshore. From a dept of 12-400m 

sea pens along the current flow