Linen Tester Simple Loupe-Style Microscope (circa 1830)


Galleria
License Info
Image Use
Custom Photos
Partners
Site Info
Contact Us
Publications
Home

The Galleries:

Photo Gallery
Silicon Zoo
Pharmaceuticals
Chip Shots
Phytochemicals
DNA Gallery
Microscapes
Vitamins
Amino Acids
Birthstones
Religion Collection
Pesticides
BeerShots
Cocktail Collection
Screen Savers
Win Wallpaper
Mac Wallpaper
Movie Gallery
 

Wim van Egmond

Anemone Larva

Though many of the largely sedentary creatures may look like underwater flowers, anemones are invertebrate animals of the order Actinaria. More than 1,000 species of anemones inhabit the seas around the world, but they are most populous and brightly colored in warm waters.

Anemone Larva

Sea anemones are not colonial animals, but it is not unusual to find large numbers of the same species living closely together. This generally occurs because the organisms often reproduce asexually by lateral fission, small clones emerging from the side of a parent anemone and settling nearby. Interestingly, these clones may actively vie for a plot to settle upon in crowded environments and may kill other anemones, including those of their own species. Extremely competitive, anemone opponents inflate and slap one another with acrorhagi, fighting tentacle-like structures that feature stinging nematocysts. Such confrontations may continue to the death of one of the participants or until both anemones decide to retreat.

Many sea anemones are also capable of reproducing sexually, and the sexes may be either dioecious or hermaphroditic, depending upon species. In the sexual mode, the cnidarians undergo internal fertilization and develop inside the mother. When they are ready for metamorphosis, the larvae swim from the parentís mouth and come to rest on its base, where they remain for protection until they develop tentacles of their own. At this point, they venture away from the parent anemone to settle new areas, where they may live for as long as 65 years.

BACK TO WIM VAN EGMOND GALLERY

Questions or comments? Send us an email.
Photomicrographs are © 2000-2013 by Wim van Egmond.
All Rights Reserved under copyright law.
© 1995-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Sunday, Sep 14, 2003 at 11:38 AM
Access Count Since September 15, 2003: 13109
Microscopes provided by:
Visit the Nikon website. Visit the Olympus Microscopy Resource Center website.