Zebra Mussel

Zebra Mussel

Dreissena polymorpha

Size: to 2"

Habitat: grows profusely on any solid surface

Zebra Mussel

Notes: Zebra Mussels were introduced into the Great Lakes in the mid-eighties from the Caspian Sea region of Eurasia. They probably arrived as larvae in the ballast water of visiting ships. Since then, they have been having a regular party - spreading like wildfire and often covering every available hard surface, including each other. This wreaks havoc with power-plant cooling systems and municipal water supplies, where masses of the tiny bivalves clog pipes and water intakes. The mussels also radically alter the native lake ecology by efficiently filtering nutrients from the water. This does have one positive effect for divers, however. Apparently, the Great Lakes and surrounding waters have never been cleaner or clearer.

Zebra Mussels
Zebra Mussels growing underneath one of the platforms at Dutch Springs.

Sparrow
Red-Eyed Vireo

It is not at all uncommon for small songbirds to be blown out to sea in a strong west wind ( or a north wind, for Long Island. ) Unable to make their way back to land, these tiny fliers eventually tire and drop into the water, or get picked off by seagulls. In desperation, they will alight on anything solid to rest. An anchored dive boat makes an easy target and may collect several hitchhikers over the course of a day. This little guy was so exhausted that he even perched on a finger for photographs. Generally, though, you should just leave them alone and not frighten them further, and they will fly away on their own once the boat gets back to land.

Printed from njscuba.net