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 Installation of a cobblestone driveway can cost $20 -$70 or more a square foot, or about $6,000 -$21,000 for 12'x25' or $19,500 -$ $65,000 for 24'x40', depending on the quality and size of cobblestones, the intricacy of the pattern, the extent of the prep work needed and local rates. Installing a brick driveway typically costs $10 -$30 or more a square foot, or $3,000 -$9,000 for 12'x25' or $9,600 -$28,800 for 24'x40'.