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When disturbed, this worm tends to curl up, writhe and wriggle. Movement is performed by small waves of muscular contraction that flow along the body from tail to head. Several waves may occur simultaneously and the worm glides forward slowly and smoothly, the swellings running evenly along the body.
Eisenia fetida, known under various common names such as manure worm, [2] redworm, brandling worm, panfish worm, trout worm, tiger worm, red wiggler worm, etc., is a species of earthworm adapted to decaying organic material. These worms thrive in rotting vegetation, compost, and manure. They are epigean, rarely found in soil.
Convolutriloba retrogemma is a reddish-brown acoel 2 mm in length also commonly known as redbug, red planaria, rust flatworm, or simply red flatworm. It is a marine animal that gets energy from its endosymbiotic algae or from the consumption of small invertebrates such as copepods and rotifers.
These worms are known for their insatiable appetite and ability to jump a foot in the air. Yes, you read that right. "True to their name, they jump and thrash immediately when handled, behaving ...
These anemones have a stem which extends through the mud up to one meter in length, making the anemone stationary. Each anemone has up to 200 tentacles which are white, or white and brown-striped in colour, and span up to 30 cm in length. They have weak nematocysts. When disturbed, the tentacles curl up into spirals rather than retracting. [1]
It has around 120–170 segments, often 135–150. The body is cylindrical in the cross section, except for the broad, flattened posterior section. Head end dark brown to reddish brown lateral, dorsal pigmentation fading towards the back. [1] The worm has a hydrostatic skeleton and moves by longitudinal and circular muscular contractions.
The two worms exchange sperm. Both worms may secrete cocoons that contain an egg each. These cocoons are lemon-shaped and are pale yellow at first, becoming more brownish as the worms inside become mature. These cocoons are clearly visible to the naked eye. Statistics. From egg to sexual maturity is about 20 weeks.
The clam worm can reach up to 15 centimetres (6 in) in length, but most specimens are smaller than this. It is brown colored at the rear, and reddish-brown on the rest of its body. It has an identifiable head with four eyes, two sensory feelers or palps, and many tentacles. The head consists of two segments: the anterior and posterior prostomium.
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