Saturday, June 23, 2012

Reason #1: Nesting Turtles

A couple of weeks ago we went on a guided sea turtle walk on the beach and it was fantastic. We saw a mamma loggerhead lay about 50 eggs, which is a small batch, but it could have been her last one of the season. The females can lay eggs 2-3 times per season. As soon as they lay one batch, they go back out to sea and start working on the next batch. They only mate once a season, and while working on the first batch of eggs can store the sperm for the second and third batches. They don't eat the entire egg-laying season, not until the last batch is in the sand. It amazes me what some females of other species have to go through. I guess it's instinct, and they don't know any different, but I just keep thinking about the multiple servings of chocolate cake I'd have when I was eating for two.
We got to the Florida Oceanographic Society’s Coastal Center on Hutchinson Island in Stuart at 9:00pm. Michelle, an educator at Florida Oceanographic, is a certified marine turtle nesting guide. (People are only allowed to watch loggerheads nest in the presence of a certified guide.) She gave us an interesting talk on sea turtles while her scouts (four of them) were out on the beaches watching for turtles coming out of the water. At 10:15 she got the radio call that there was a loggerhead digging a nest on the beach. The leatherbacks are still nesting too, but we're not allowed to watch them because they're endangered. The loggerheads are only "threatened," so we can watch them in the presence of a guide. The green turtles will nest starting in a month or so, and they are endangered too, so, guide or no, we can’t watch them either. 90% of the loggerheads in the U.S. nest on Florida’s beaches. Cool!
We all jumped into our cars and drove up the island about a mile and parked at a public beach. Then, very carefully and escorted by scouts equipped with night-vision binoculars and red filters on their flashlights so as not to disturb the turtles, we walked a little north of the boardwalk to where the turtle was spotted. Her nest was already dug and she was already in labor when we got there. She was in “the zone", as they say, so she wasn’t really aware of us being there as long as we weren’t too loud and didn’t flash any lights in her eyes. One of the scouts, Leslie, had propped up a flashlight in the sand behind her so we could see what was happening. Ellie, as we chose to call the turtle, dropped a couple of eggs in the hole right after we got there, and then nothing happened for about an hour. Sometimes they actually fall asleep in the process, but Leslie said she was awake; she was just having a little difficulty. Leslie said Ellie’s eggs were larger than most. 
Leslie, a volunteer at Florida Oceanographic, was so knowledgeable. She talked for the full hour that Ellie was in labor, telling us so many fascinating things about turtles. It makes all the difference in the world to be witnessing the nesting with someone like that.
After an hour, the eggs started dropping at about two per minute.We expected the usual 80 to 150 eggs, but Ellie seemed satisfied with the (approximately) 50 that we counted. When she was done, she started carefully packing sand on top of the eggs with her hind flippers. They have to pack it just right so the eggs don't get crushed, but they're safe from predators. In between flipping sand onto the nest, she's packing it down with her abdomen. It is something to see. 
After about 15-20 minutes of this, she turned back toward the ocean and headed out to sea. I almost cried when she went back into the water. I had just witnessed this beautiful animal giving birth, so to speak, and I couldn’t help thinking what a hard life her hatchlings will have. The ocean and beach will be teeming with predators waiting to have a turtle hatchling meal in 45-60 days. Leslie says the sharks will be waiting offshore. (Remind me not to swim in the ocean in 45-60 days!) The few hatchlings that survive, out of every 1000-10,000 eggs that are laid, are fated to lead the same life as their mother - migrating in the sea grass beds of the Atlantic Ocean for twenty or so years, until they are mature enough to mate, and then the females returning to the beach where they hatched to make their own nests. 
Such an incredible experience. Just to see a wild sea turtle on the beach was exciting. She was beautiful - her carapace (shell) was about 2.5-3 feet long. Fortunately she had no visible scars from damage by boats or other hazards. Witnessing a loggerhead nesting is one of the unique advantages of living in Florida. When we lived here before, I never much cared for the natural wildlife, either flora or fauna - mostly out of ignorance. I guess I was too preoccupied with day-to-day life to notice what was around me. 
The habitat and climate may not be for everyone, but there are some amazing things that go on here. Florida is unique in the U.S. in many ways. It's a good thing it's attached because I can't imagine why the U.S. would have wanted it back in the early days. Not difficult to understand why it wasn't settled until the late 1800's. Understandably Americans chose to occupy the more desirable areas of the country before they mustered up the courage to tackle Florida. But those who have the fortitude to tolerate the mosquitos and humidity of summer have the advantage of such rare opportunities as this.

1 comment:

  1. I love that you are doing this. I love your writing and approach.

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