In this YouTube video by UNESCO hear the 5th principle of Ocean Literacy explained by Asha de Vos, a marine biologist from Sri Lanka, that recently discovered a new subspecies of the blue whale, link. This discovery was stunning considering how big these animals are. If we are just discovering huge whale subspecies, how many smaller organisms do we not know about? 

This beautiful trigger fish is part of the coral reef ecosystem, where each animal is part of the food web. The trigger fish eats algae and small invertebrates such as worm, sea urchins and other small organisms that live in the sandy seabed. However, these fish need to hide in the coral from predators that eat them including bigger fish, like groupers, and sharks, and they have a unique adaptation that helps them do so. Learn more about it in this video by Deep Marine Sciences, link.

Learn more about using identification keys to recognize marine species in this fantastic learning resource part of the Arizona State University "Ask a Biologist". The Keys to the Ocean has two games, one about fish and the other about plankton. Test your knowledge and your ability to use a key to identify species, link. 

Check to see if you put the different coastal habitats in the correct place.