Summer Wildlife Update 2026: Manatee & Dolphin Season in North Biscayne Bay

Summer 2026 is turning out to be an exceptional season for marine wildlife sightings in North Biscayne Bay. Warmer water temperatures, healthy seagrass growth, and calm morning tides have brought high numbers of West Indian Manatees and Atlantic Bottlenose Dolphins right into the channels surrounding Sandspur Island (Raccoon Island).

1. Manatee Mother & Calf Sightings Near Oleta Channel

Throughout July and August 2026, tour captains and eco-kayakers departing from Oleta River State Park reported daily encounters with manatee mothers and nursing calves. Manatees prefer the shallow, warm brackish waters along mangrove edges, where they feed peacefully on shoal grass and rest near sandbars.

Florida law requires boaters to maintain slow-speed "Idle Speed" in designated manatee zones. On commercial boat tours, experienced captains use raised viewing decks and electric trolling motors to observe manatees without disturbing their natural swimming patterns.

2. Bottlenose Dolphin Pods in Haulover Channel

Bottlenose dolphins are active hunters in the deeper channels connecting Haulover Inlet to Indian Creek and Sandspur Island. During morning high tides, resident pods often swim alongside boat wakes, providing spectacular photo opportunities for passengers onboard.

3. Combining Marine Sightings with Raccoon Beach Visits

What makes a Sandspur Island boat tour truly unique is combining ocean mammal watching with beach wading alongside friendly island raccoons. Most 2.5 to 3.5 hour boat excursions allocate 45 minutes for raccoon beach interaction, followed by a scenic cruise past luxury mansions and a swim stop at Haulover Sandbar.