Category : Natural History

Natural History / Natural History - 2 years ago

What is a living shoreline?

Living shorelines use plants or other natural elements to stabilize estuarine coasts, bays, or tributaries.Infographic Text Living shorelines are a green infrastructure technique using native vegetation alone or in combination with offshore si...

Natural History / Natural History - 2 years ago

What is an oil spill trajectory?

VIDEO: Predicting where oil may go in the water is no easy task. Here's what you need to know in a minute. Transcript During the threat of an oil spill, responders need to know where that spilled oil will go in order to protect shorelines wi...

Natural History / Natural History - 2 years ago

What is a pocosin?

Pocosin Lakes National Wildlife Refuge, North Carolina. Pocosins are generally found along the Atlantic coastal plain of the United States, from southern Virginia to northern Florida. These areas typically occur in broad, low-lying shallow bas...

Natural History / Natural History - 2 years ago

What are barnacles?

Those aren't dragon claws—they're gooseneck barnacles! These filter feeders are found in the rocky tide pools of Olympic Coast National Marine Sanctuary. Their shells are made up of multiple white plates that help protect them from predators and...

Natural History / Natural History - 2 years ago

What is GPS?

The GPS Block IIR(M) Satellite shown here is one of the various generations of GPS satellites orbiting the Earth. GPS satellites fly in medium Earth orbit at an altitude of approximately 12,550 miles. Each satellite circles the Earth twice a day....

Natural History / Natural History - 2 years ago

What is the Great Loop?

Boating along the Erie Canal, part of the Great Loop (image courtesy of Gladys L. Buzzell). The Great Loop is a continuous waterway that recreational mariners can travel that includes part of the Atlantic, Gulf Intracoastal Waterways, the Grea...

Natural History / Natural History - 2 years ago

What color is an iceberg?

An iceberg (and a few penguins) floating off the coast of Antarctica. Photo courtesy of Kathy Reitz. Most people would say that icebergs are white—and most of them are. But did you know that icebergs can also appear in spectacular shades of bl...

Natural History / Natural History - 2 years ago

What is marine biogeography?

Creating a habitat ecosystem map of the seafloor—a key component of marine biogeography—is a tricky process. Learn how it works in this two-minute video. Learn more. By mapping benthic habitats, studying what occurs on the bottom of a body...

Natural History / Natural History - 2 years ago

What is the Forchhammer's Principle?

A CTD (conductivity, temperature, and depth) device. The primary function of this tool is to detect how the conductivity and temperature of the water column changes relative to depth. Conductivity is a measure of how well a solution conducts elec...

Natural History / Natural History - 2 years ago

What is seaspeak?

Whether on the high seas or at port, misunderstood communication can lead to serious and even dangerous situations. "Seaspeak", the official language of the seas, helps to prevent miscommunication. Have you ever wondered how crews on ships at...

Natural History / Natural History - 2 years ago

What is GRAV-D?

The pilot and co-pilot of a Navy-owned King Air aircraft prepare for takeoff on a data collection flight with GRAV-D instruments (fore and mid-ground) and a GRAV-D operator as their payload. So, what does that mean? First, to define a couple o...

Natural History / Natural History - 2 years ago

What is a NOAA tide table?

This image shows daily tide predictions for Eastport, Maine, for January-February 1867. This page is from the first edition of a national annual tide table publication created in 1866 by the U.S. Coast Survey, a predecessor of NOAA. A tide tab...

Natural History / Natural History - 2 years ago

What is a maritime forest?

These stumps are evidence that trees once grew here, but due to a constantly changing shoreline, they are now mostly submerged in the ocean. Maritime forests are shoreline estuaries that grow along coastal barrier islands that support a great...