In summary, San Francisco's interest in the HydroVenturi approach is due to the value proposition of no moving parts underwater, compared to the underwater turbines of a LaRance river-type saltwater entranement, of a Blue Energy or Verdant Power vertical or horizontal axis-type propeller installation. A technology with no moving parts underwater makes tidal power attractive to San Francisco's well-established environmental community. This approach is viewed as the most environmentally benign for the bay area's endangered salmon runs, delta smelt, anchovies, dolphins, whales, seals, sea lions, and benthic creatures, other fish species and marine mammals. For these reason, San Francisco believes the time has come to harvest the City's tidal and ocean wave resources. Renewable energy development also creates jobs for the local community, at an anticipated rate of 10 jobs per Megawatt.