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 An asphalt driveway costs about $2 -$5 a square foot, or $1,200 -$3,000 for 12'x50' to $31,000 -$75,000 for a 12' lane a quarter mile long. Also called tar and chip or oil and stone, macadam driveway can cost $1 -$3 or more a square foot on an existing driveway, or $600 -$1,800 for 12'x50'; and $2 -$4 or more a square foot for a completely new driveway with gravel base, or $1,200 -$2,400 for 12'x50'.