Amphinomida
Amphinomida is an order of marine polychaete worms, commonly known as fireworms. They are characterized by their bright, often iridescent colors and their ability to release toxic chemicals as a defense mechanism. Fireworms are found worldwide in tropical and subtropical waters, often inhabiting coral reefs and rocky shores.
Common Names
Fireworms are commonly referred to as fireworms, bristleworms, or featherduster worms, although the latter name is more often associated with the order Sabellida.
Characteristics
Amphinomida have a variety of characteristics that distinguish them from other polychaete worms:
- Bright Colors: Fireworms are known for their vibrant colors, often featuring red, orange, yellow, or green hues.
- Setae: They possess specialized bristles called setae, which can be barbed and contain toxins. These setae are used for defense and can cause painful stings to humans.
- Parapodia: Fireworms have well-developed parapodia, fleshy appendages that help them move and breathe.
- Body Shape: Their bodies are generally cylindrical and segmented, with a distinct head region and a posterior end.
Environments
Fireworms are found in a variety of marine environments, but they are most commonly encountered in:
- Coral Reefs: They are often found among coral colonies, where they feed on algae and other invertebrates.
- Rocky Shores: Fireworms can also be found in rocky intertidal zones, where they hide under rocks or in crevices.
- Seagrass Beds: Some species inhabit seagrass beds, where they prey on small invertebrates.
References
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