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.
Average Costs Per Square Foot. Depending on the region of the country where you live the cost of a new asphalt paved driveway ranges from $2 to $5 per square foot installed as of 2013, with an average of around $3 to $4 per square foot. These prices include the cost of labor and the gravel base.