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 cucumbers (Holothuroidea) are a group of echinoderms that include about 1250 living species. Sea cucumbers have an internal skeleton or endoskeleton that consists of tiny ossicles, small particles of calcium carbonate embedded in the body wall. Sea cucumbers have an elongated body and thick skin.