A cool article in the New York Times about the complexity, and the real purpose, of humpback whale song. Much of the article is based on this paper that suggests potential “cultural revolutions” in humpback whale songs (paper summary below).
An interesting recent paper evaluating the efficacy of shark sanctuaries, including in The Bahamas. The paper is a little long, but easily accessible. It is straight forward to scroll through sections to find items of most interest (e.g., human uses or conservation awareness). The full paper summary pasted below.
Due to well-documented declines in many shark populations there is increasing […]
Recently, large collaborations between sea turtle monitoring programs in the West Atlantic have identified regional declines in growth rates for loggerheads, hawksbills, and greens. Data were used from in-water capture-recapture studies. Karen Bjorndal of the University of Florida has taken the helm on three papers that address the trends for each of these species.
Notably, all species exhibited increases in growth rates […]
A new paper out last month presents the possibility that typical sea turtle population assessment methods via foot patrols may be overestimating nesting populations by as much as a factor of 2. You can view it here.
The paper uses satellite tracking of nesting green turtles (Chelonia mydas) at their study site to show that they lay an average of […]
I am always excited to report positive news (reported at length here). Starting in the new year, the U.S. National Oceanic and Atmospheric Administration (NOAA) will require countries exporting seafood to the United States to demonstrate that their fisheries comply with the U.S. Marine Mammal Protection Act (MMPA). The US is the world’s largest seafood importer and the MMPA is among […]
Satellite tracking data is coming in for the 3 hawksbill sea turtles that received Platform Terminal Transmitters just over a month ago on Long Island, Antigua. The transmitters have 2 “saltwater switches” that, when exposed to air as the turtle surfaces to breathe, trigger the transmission of its location and stored sensor data (temperature, depth). So far we have been tracking […]
Shortly after 2am on July 24th, the Jumby Bay Hawksbill Project in Antigua observed our first hawksbill sea turtle hatchlings of the season! Hawksbills typically lay around 150 eggs that will incubate in their sandy chambers for 50-60 days. After hatching, the turtles will rest for one to two days while […]
This month we are planning to deploy 3 satellite tracking devices onto 3 hawksbill females. These are known as Platform Terminal Transmitters (PTTs). They provide information on the offshore movements of sea turtles that are otherwise near impossible to study. Roughly 10 years ago, the Jumby Bay Hawksbill Project(JBHP) deployed 3 PTTs, so it will be interesting to revisit the research in […]