endangered marine animals
DESCRIPTION
An interesting presentation about environmental issuesTRANSCRIPT
ENDANGERED MARINE ANIMALS
MIGUEL BALLESTEROS HERRAIZ, 4ºA
KEY WORDS
• Ecosystem• Animals• Vegetables• Species• Whales• Seals• Turtles• Oil• Pollution• Lakes, seas, oceans,
rivers…
INTRODUCTION
• In the last centuries, Technology has avanced fastly, and we had a considerable impact on the ecosystems destruction.
• Today ,we’re beginning to change, and we want to save marine animals and their ecosystems.
INTRODUCTION
• In this process, whales and dolphins have been hunted near till their extinction.
• Turtles, fish and seals have been hunted too because they are good “material” to make products that we consume.
ENDANGERED ANIMALS
• Sea-lion, Steller (Eumetopias jubatus)
ENDANGERED ANIMALS
• Seal, Caribbean monk (Monachus tropicalis)
ENDANGERED ANIMALS
• Seal, guadalupe fur (Arctocephalus townsendi)
ENANGERED ANIMALS
• Seal, Hawaiian monk (Monachus schauinslandi)
ENDANGERED ANIMALS
• Seal, Mediterranean monk (Monachus monachus)
ENDANGERED ANIMALS
• Whale, blue (Balaenoptera musculus)
ENDANGERED ANIMALS
• Whale, bowhead (Balaena mysticetus)
ENDANGERED ANIMALS
• Whale, finback (Balaenoptera physalus)
ENDANGERED ANIMALS
• Whale, right (Balaena glacialis (incl. australis))
ENDANGERED ANIMALS
• Whale, sperm (Physeter macrocephalus (=catodon))
ENDANGERED ANIMALS
• Salmon, chinook (Sacramento R. winter run)Oncorhynchus tshawytscha)
ENDANGERED ANIMALS
• Salmon, sockeye (Oncorhynchus nerka)
ENDANGERED ANIMALS
• Sturgeon, shortnose (Acipenser brevirostrum)
ENDANGERED ANIMALS
• Carey, Turtle (Eretmochelys imbricata)
ENDANGERED ANIMALS
• Hammerhead shark (mokarran Sphyrna)
ENDANGERED ANIMALS
• Gulf of California porpoise (Phocoena sinus)
CAUSES
• Rivers, seas, oceans and lakes contamination:
– With oil: we throw into the sea 4 million tons of oil.
– With acid rain: vegetables and animals have been afected for this kind of rain. Fish poblations have been reduced and in the worst case, they have disappeared.
CAUSES
– Organic waste: when these types of waste are in excess, the number of bacerias grow and take all the oxygen.
– Inorganic chemicals
– Inorganic vegetables nutrients
CAUSES
– Sediment.
– Radioactive materials.
– Thermal pollution: hot water produced by power plants increase rivers, lakes, seas and oceans water temperature
CAUSES
– Overfishing
– The introduction of foreign species : humans introduce foreign species and they must adapt to that different ecosystem, so, trophic chains change.
SOLUTIONS
• Oil is the most important cause of the species disappearance, so we can do the following for prevent oil spill:
-Reuse oil and fats.
-Use and waste less oil.
-Prohibit oil drilling in ecologically sensitive areas to pollution.