The Waratah anemone of Australia

by Miroslava Jurcik

Title

The Waratah anemone of Australia

Artist

Miroslava Jurcik

Medium

Photograph - Photograph

Description

The Waratah anemone of Australia (Actinia tenebrosa)from the Sydney Aquarium. Named after Australian waratah plant.
The sea anemone is an oddball: half-plant and half-animal, at least when it comes to its genetic code, new research suggests.
The sea creature's genes look more like those of animals, but the regulatory code that determines whether those genes are expressed resembles that in plants, according to a study published Tuesday (March 18, 2014) in the journal Genome Research.
What's more, the complicated network of gene interactions found in the simple sea anemone resembles that found in widely divergent, more complex animals.
https://www.livescience.com/44243-sea-anemone-genome-analyzed.html
Sea anemones are carnivores that eat fish, mussels, zooplankton (like copepods, other small crustaceans, and tiny marine larvae), and worms. Sea anemones have few predators like some Sea slugs and some fish.
Sea anemones (scientific name: Actiniaria) are a major group of the Cnidaria, named after the anemone, a terrestrial flower. There are more than 1,000 species.
Most sea anemone is a polyp attached at the bottom to the surface beneath it by an adhesive foot, called a pedal disk, with a column shaped body ending in an oral disk. The mouth is in the middle of the oral disk surrounded by tentacles armed with many nematocysts for defense and to capture prey.

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February 8th, 2018

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