Tides in Indonesia change only about three feet during neap tides and up to 8 feet during the full and new moon periods. (wavehunters.com)
40 b. Neap Tides Earth, Moon, and Sun form right angles and work against each other High Tides are lower and Low Tides are higher than normal (slideplayer.com)
Instead, the researchers speculate that the birds were responding to movements of their aquatic prey timed to the spring - neap tide cycle, a hypothesis that could be confirmed through a study jointly tracking predator and prey abundance. (sciencedaily.com)