A group of state Senate Republicans is calling for New Jersey officials to put a temporary end to wind farm development after numerous whales have washed up dead along the Jersey Shore.

At least 10 whales have been found dead in the tri-state areas over the last few months. About 20 whales in all have died along the East Coast.

The lawmakers say that they believe the wind farms are to blame for the spike.

“The only change in our waters recently has been the start of survey work for the construction of offshore wind farms. It seems like too big of a coincidence to ignore, especially when some of the impacted whales are endangered,” state Senate Republican Leader Steven Oroho wrote in a statement.

Oroho says that wind farm development often uses sonar mapping, drilling and seismic testing which could negatively impact marine life.

Several dolphins were also found dead near Sandy Hook this weekend.