The Sea Shepherd Conservation Society engages in various demonstrations, campaigns, and tactical operations at sea and elsewhere, including conventional protests and direct actions to protect marine wildlife. Sea Shepherd operations have included interdiction against commercial fishing, shark poaching and finning, seal hunting and whaling. Many of their activities have been called piracy or terrorism by their targets and by the ICRW. Sea Shepherd says that they have taken more than 4,000 volunteers on operations over a period of 30 years.