North Atlantic right whales (Eubalaena glacialis) are big, but they're not the biggest whales. That distinction goes to the blue whale (Balaenoptera musculus), the largest animal on Earth. The orca's size of up to 31 feet (9.4 meters) makes it the largest dolphin. The sperm whale, on the other hand, may not be the biggest whale, but it has the biggest brain to have ever existed on Earth. A comparison chart of whale sizes helps put it all in perspective!
Chikungunya fever is caused by a virus that is spread to people through the bite of infected mosquitoes. Like Dengue, it is transmitted by Aedes mosquitoes, especially Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito).
The cause of malaria is an infection with a malaria parasite. There are several types of malaria parasites, each belonging to the genus Plasmodium.hile an infection with a Plasmodium parasite actually causes malaria, there is another important species in malaria transmission. This is the Anopheles mosquito. Anopheles mosquitoes are important because they actually transmit Plasmodium to humans through a bite.