In practice this means drawing a graph (see below) with incubation time in days along the x-axis and weight up the y-axis. The average weight of eggs when set (day 0) can be entered and the ideal hatching weight (average day 0 weight less 14%) can be plotted on the day the hatch is due. These two points are then joined to give the ideal weight loss line. Average weights can then be taken every three or four days and plotted on the graph.
Most sea cucumbers are about 20 cm in length, while some adults may not grow to be over a centimeter. Sea cucumbers enjoy the life-span of five to ten years. Despite at first appearing as a plant or mineral on the ocean floor the sea cucumber, or Holothuroid, is an animal.The sea cucumber is in the Kingdom Animalia, Phylum Echinodermata, Subphylum Asterozoa (with sea urchins, sand dollars, sea stars, and basket stars).any of these sea cucumbers feed on or in the sand beneath them. Reef dwelling sea cucumbers are most often suspension feeders, as currents continually bring in food. One very important feature of the sea cucumber is the calcareous ring that encircles the throat.
Sea Cucumber. The sea cucumber is a marine animal (not plant) that is an echinoderm from the Holothuroidea class. It has leathery skin, an elongated body like a cucumber, and a single, branched gonad.They are found worldwide on the sea floor.ike any other echinoderm, sea cucumbers have an endoskeleton that is below the skin. A remarkable characteristic is that the catch collagen that forms on their body walls. This can be loosened and tightened when the sea cucumber wants it to be, and can be used to squeeze through a small gap.