Some sponges have sexes, but most are hermaphrodites, or are sexless. A sponge can reproduce asexually through budding. However, most  sponges reproduce sexually by releasing sperm cells into the water  to fertilize ova.ponges are reproduced asexually by process of budding, which have great power of regeneration and sexually sponges are produced by gametes formation method.
The tools used, the safety measures taken and the urgency of completion are different for every project, and all of these factors can influence the total price. If you want a rough estimate to start budgeting, however, plan for the cost of professional sandblasting to be anywhere from $916 to $1,198.Before you hire a professional to start sandblasting the exterior of your home, make sure that you fully understand how the process works.aking Permits and Neighbors Into Account. Sandblasting may be quick, but it is such an intensive method that permits are often required before work can begin. Make sure to build in time and budget for the cost of this additional requirement.
1 If the damage is extensive, repaving may be necessary. 2  A newly paved driveway can cost $600-$3,000 for gravel, macadam or black asphalt for a small 12x50 (600 square foot) surface, and can run two to three times as much for materials like concrete or cobblestones. The cost is about $10 a gallon. 2  To fill holes, you must clean away the debris, fill the hole with a patching material (prices range from $5 to $9 for a 60-pound bag) and then tamp the material down to compress it as much as possible.