1 The training course is five weeks. 2  During the first two weeks, students are in the classroom. 3  During the second three weeks, students complete a clinical externship at various Intermountain Healthcare hospitals.
But surprisingly, we still donât know how many species live by the shore: estimates vary widely, from 178,000 species to more than 10 million. NaGISA scientists pulled on their boots and waded and dived in coastal waters around the world to estimate the number of species on our coasts more precisely.
It's a tough question, but we now have the best answer yet. Last year researchers at Dalhousie University in Nova Scotia released the most rigorous estimate yet of how many species live on our planet: 8.7 million, not counting bacteria. Nearly 6.5 million of these species live on land versus 2.2 million in the ocean, according to the analysis. âHumanity has committed itself to saving species from extinction, but until now we have not had a good idea of even how many there are,â says coauthor Boris Worm, a marine ecologist at Dalhousie.