Osprey

Osprey

Ospreys, or "Fish Eagles", Pandion haliaetus, are fairly common along shorelines, marshes, and larger inland waterways. They dive for fish, catching them with their talons - which is quite a sight to see. At the last moment in its headlong plunge, the bird pivots to strike the water feet-first.

At 22", wingspan 54", Ospreys are smaller than eagles, but larger than hawks, and form their own family. Once threatened by DDT, which thins the shells of their eggs and makes them susceptible to breakage, Ospreys have made a great comeback and may be seen around almost any salt marsh. They nest in trees, or on special platforms that are erected for them. Several nesting pairs of Bald Eagles also live in the region.

Osprey

Bald Eagles, much larger than Ospreys, with an all-white head and neck, are making a recovery. Don't be too surprised to see one!


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Here is a description of recreational dive planning. The purpose here is to demonstrate basic dive planning and use of Dive Tables for non-divers who are interested in becoming certified but are worried about the complexities and math involved. Learning to use dive tables is usually the single most daunting classroom task for a student diver. It's really not all that hard.

The purpose of dive planning is to manage the Nitrogen gas that is absorbed into the tissues of your body while breathing air at higher-than-normal pressures underwater. If you absorb too much Nitrogen at depth and then ascend to normal atmospheric pressure, the gas will form bubbles in your blood and tissues. This is called Decompression Sickness, commonly known as "the bends." Decompression Sickness can vary in severity from barely noticeable to fatal, depending on your dive profile and other factors. The goal of no-decompression dive planning is to plan your dives in advance so that under no circumstances* can ascending to the surface result in Decompression Sickness.