Lanikai Beach offers many fun activities including sunbathing, beachcombing, fishing, wildlife watching, swimming, kayaking, canoeing, paddleboarding, kitesurfing, windsurfing, jet-skiing, water-skiing, surf-skiing, boating, and snorkeling. The water near Lanikai Beach is generally calm, making it ideal for beginner swimmers, kayakers, canoers, and paddleboarders. The water here is also popular with snorkelers, who enter it to explore its vibrant biodiversity - the water here has patchy coral reefs and you can view many kinds of fish here including parrotfish, wrasse, and surgeonfish. In addition, you can also view sea turtles here on rare occasions. However, despite its vibrant marine biodiversity, the water here is not an extremely popular snorkeling spot due to low visibility. If you are planning to enter the water near Lanikai Beach, we recommend being careful as the water here is known to have unpredictable rip currents. In addition, jellyfish are also present in the water here and can inflict a powerful sting if disturbed. The water near the beach is also known to have stinging seaweed (also known as limu) particularly between June and September, which makes aquatic recreational activities difficult here. If you are planning to fish in the water near Lanikai Beach, we recommend following the local fishing regulations. Two offshore islets collectively named Nā Mokulua are also present near the beach. Visitors also launch their boats/kayaks/ canoes from Lanikai Beach in order to explore the northern islet of the Nā Mokulua islets. If you are planning to fish in the water near Lanikai Beach, we recommend ensuring compliance with the local fishing regulations. A hiking trail named the Lanikai Pillbox Trail starts near this beach. This trail leads up along a hill to a World War Two-era military installation named Lanikai Pillbox which offers Instagram-worthy views of the Lanikai Beach, the Pacific Ocean and the Oahu shoreline.