Advantage Tours, a fully licensed eco-friendly tour company, has been leading whale watching tours in South Africa's iSimangaliso Wetland Park since 1991. Advantage Tours also operate boat-based Hippo and Croc Tours on the St. Lucia Estuary. Expert guides lead both tours. Family Travel Tips: The whale-watching season is from mid-May to mid-December. Whale watching trips are 3 hours in length. Lifejackets and raincoats are provided. Dress in warm, quick-dry clothing and wear water shoes. Bring drinking water and a towel. Hippo and Croc tours, 2 hours long, explore the narrows, mouth and southern portion of the estuary. All tours depart from the McKenzie Street boat jetty in St. Lucia.