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.