Tag: Health

Natural History / Natural History - 4 months ago

What is a watershed?

While some watersheds are relatively small, others encompass thousands of square miles and may contain streams, rivers, lakes, reservoirs, and underlying groundwater that are hundreds of miles inland. Shown here: an aerial view of Drakes Bay, par...

Natural History / Natural History - 8 months ago

What is eutrophication?

This NASA Earth Observatory image shows the region where the Mississippi River meets the Gulf of Mexico. It illustrates how sediment is moved from the land to the sea. The Mississippi River carries millions of tons of nutrient-rich sediment into...

Natural History / Natural History - 1 year ago

What is a catcher beach?

A classic example of a catcher beach along the shores of Hawaii. This map shows debris concentrations from an aerial survey done in Alaska in 2012. The map points to two known catcher areas, along Kruzof Island and Gore Point. Not to be...

Natural History / Natural History - 1 year ago

What is a sea lamprey?

The rasping mouth of the sea lamprey, an infamous Great Lakes invader. Image credit: Ted Lawrence/Great Lakes Fishery Commission Among the most primitive of all vertebrate species, the sea lamprey is a parasitic fish native to the northern and...

Natural History / Natural History - 1 year ago

What is an oil seep?

A natural tar seep offshore of Gaviota in Santa Barbara County, California. Credit: Donna Schroeder/U.S. Geological Survey Did you know that naturally occurring oil seeps from the seafloor are the largest source of oil entering the world ocean...

Natural History / Natural History - 1 year ago

What are microplastics?

Microplastics seen during the 2014 Northwestern Hawaiian Islands marine debris removal mission. Plastic is the most prevalent type of marine debris found in our ocean and Great Lakes. Plastic debris can come in all shapes and sizes, but those...

Natural History / Natural History - 3 years ago

What is HAZMAT?

In January 2010, a crude oil tanker (T/V Eagle Otome) and a barge collided in Port Arthur, Texas. Oil spilled during this incident is an example of hazardous material, or HAZMAT. Under the National Contingency Plan, NOAA provides scientific suppo...