Pegasus Bay is a large, open coastal bay on the east coast of New Zealand's South Island, extending approximately 50 kilometers from Sumner in the south to Amberley in the north. The bay presents a vast, gently curving coastline of sandy and gravelly beaches, with a generally gentle slope that makes it distinct from the more hazardous surf and undertows found on the Canterbury Bight to the south. This topography contributes to a safer environment for offshore kayaking compared to adjacent areas. The bay is open and expansive, which means it is exposed and can become rough, particularly during northeasterly or northwesterly winds. For paddlers, a southwesterly wind is ideal as it tends to flatten the surf and clear the water. The two main river mouths, the Waimakariri River at Kairaki and the smaller Ashley River, provide notable geographical features and potential access points. Access to the coastline is available at numerous points, including the coastal suburb of New Brighton with its pier, Kairaki Beach, and the new town of Pegasus, which is being developed just inland from the bay. The beach itself can be accessed by 4WD vehicle at low tide along much of its length, which may facilitate launching and retrieval for paddlers with suitable vehicles. The bay is known for its population of paddle crabs and shellfish, and elephant fish are a notable seasonal species. The water clarity and sea state are highly dependent on wind conditions, requiring careful weather planning for any paddling trip.