The 2011 tsunami , which led to the nuclear catastrophe at Fukushima, has swept thousands of sea creatures across the Pacific Ocean to the US coast. In the past 6 years scientists have found mussels, starfish, crabs and other marine animals washed up on the American Pacific coast. Marine biologists expect that there are even more species to arrive in the future.
The giant waves caused by the tsunami in Japan were almost 40 metres tall and washed objects into the open sea. In 2012, scientists found debris together with living creatures on them near the Alaskan coast as well as in Hawaii. They were sea animals that have never before been seen there.
Scientists are surprised that marine species have been able to survive over such a long period in such bad conditions. However, most species travelled on plastic or glass objects, things that do not decompose and stay the same for many years. On the other hand, animals that travelled on wooden objects did not make the long journey across the Pacific, because wood lasts only for a short time.
Because the debris moved slowly across the ocean the animals had time to get used to their new surroundings as they travelled the 4,000 mile journey across the Pacific.
With so much plastic and other garbage swimming in the world’s oceans, the danger of marine animals being washed up on foreign coasts has never been greater.
Experts are not sure what effect these new species may have on the local environment. Such invasive species may change the ecosystem of the area they arrive at. They might transport new diseases or kill off existing species . In any case, it will take a decade or more to see the results.
- crab= sea animal with a hard shell , five legs on each side and two large claws
- creature = animal; living thing
- debris = garbage, waste
- decade = ten years
- decompose = to break down into many smaller parts
- disease = illness
- ecosystem = the animals and plants in a certain area and they way they live together
- effect = result ; change caused by an event
- foreign = another country
- garbage = waste; things people throw away
- however = but
- invasive species = plant or animal that does not grow naturally in an area but has come there from somewhere else
- journey = trip
- local environment = the world around the place that you live in
- marine species = animals and plants that live in the ocean
- mussel = small sea animal with a soft body that can be eaten and a black shell that is split into two parts
- nuclear catastrophe = here: an atomic power plant explodes and sends dangerous radioactive waves into the atmosphere
- scientist = a person who is trained in science and works in a lab
- starfish = flat sea animal that has five arms and looks like a star
- surroundings = the place or natural area around a person or animal
- survive = live on after a dangerous situation
- sweep – swept = to push something away
- tsunami = very large waves, most of the time cause by an earthquake in or near the sea.