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Marine Life & Conservation Blogs

Turtles of the Riviera Maya & Cozumel

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A blog by Pro Dive International

Plenty of empty shells of recently hatched turtle eggs were spotted by our divers at Sabalos. They had been washed off shore onto the reef after the baby turtles had dug out of their nest at night and swam off into the sea.

The turtle nesting season on the Riviera Maya and in Cozumel happens between May and October, which means that you may be lucky to see some nests or even hatchlings during your stay with us.

Six out of the seven sea turtle species worldwide visit Mexico every year. We are lucky enough to get to see Green Turtles and Loggerhead Turtles regularly during our dives, as they are in search of food and a good clean.

The reefs and ecosystems here provide a great number of tasty snacks for a turtle, for example seagrass, sponges, crustaceans and many more. And while the turtles pass through the reef, they receive a top-notch cleaning service from many of the local fishes who feed on their parasites and algae growth.

6 Turtle Fun Facts

  1. Green turtles are so named because of their green colored fat caused by their rich diet of seagrass.
  2. Green Turtles are the largest hard-shell turtles in the world. The largest known green turtle weighed 395 kg/ 871 lbs, with a shell that measured more than 152 cm/ 5 ft.
  3. Loggerhead Turtles are so named for their massive broad muscular heads.
  4. Adult males are normally easy to distinguish from females because of their long tails visible extending past their shell.
  5. Female turtles normally return to the exact same location where they were born to lay their eggs.
  6. The sex of a baby turtle is determined by the temperature at which the egg is kept.

Turtles are regular visitors to many of our dive sites, but they are most commonly found at Tortuga – this dive site is even named turtle in Spanish! It’s located just off shore from our dive center at the Occidental Xcaret and easily accessible by boat from any of our Playa Del Carmen locations.

Moreover, for those of you who are not divers, we are lucky enough to have some extensive seagrass beds where green turtles love to hang out and eat, which is an easy snorkel off shore during one of our tours with a guide who is licensed to enter those protected areas.

Turtle Locations

Besides observing them underwater, you may be lucky to find some turtle nests in front of your resort on the Riviera Maya or in Cozumel. Hotel employees usually rope them off to ensure their protection.

Turtle conservation projects are a great alternative to learn more about their behaviors, importance for the marine environment, how you can help protect them, and to observe nests or turtles first hand:

Turtle Protection

Every sea turtle species on earth nests on Mexico’s beaches (save one that is only found in Australia). Consequently, Mexico is known as the sea turtle capital of the world and its turtle protection laws are so important on a global scale.

Current Mexican law classifies all sea turtle species as endangered.

Regulations

  • Turtles can’t be killed for their meat, skin, shell or eggs.
  • Native vegetation can’t be removed in nesting habitats, to stop erosion.
  • New regulations call for moving, changing or eliminating any light sources that illuminate a nesting beach, as baby turtles can become disoriented from finding their way to the ocean.
  • Vehicles can have a maximum weight of 300 kg on nesting beaches and only be used for patrolling and management of the nesting site.
  • Recently outlawed were turtle release events, as many places kept the hatchlings in confinement for several days until a sufficient number of participants had signed up for this activity. Upon release, they were too weak to handle the surf and avoid predators.

All of these and many more regulations help protect beaches, nests, female sea turtles, their eggs and hatchlings to make it a safer place for them.

How to start your Turtle Adventure

Let’s discover some turtles together during our dives! If you are not a diver, why not sign up for a PADI course; or join our Mexican Snorkeling Adventure at 15% OFF starting from Playa del Carmen or Tulum, if booked online until 16/09 & redeemed until Dec 22, with reference to this blog!

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Heading out on the water this Summer? Watch for manatees

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manatee

As National Safe Boating Week approaches, Save the Manatee® Club is urging boaters, and anyone that enjoys Florida’s waterways, to respect and protect the defenseless manatees that inhabit our shared waterways. From May 18 to 24, leading up to Memorial Day Weekend, the campaign aims to raise awareness about recreational boating safety and the importance of safeguarding imperiled manatees during the summer boating season. This week also emphasizes the importance of encouraging boaters to enroll in a boating safety course.

Manatees are semi-migratory marine mammals that are commonly found in shallow estuaries, bays, rivers, canals, and coastal areas throughout Florida and neighboring states. With some manatees venturing as far west as Texas and as far north as Massachusetts, collisions between these gentle giants and watercraft have become distressingly frequent. Boat propellers and high-speed collisions pose significant threats to manatees, often resulting in severe injuries or even death.

Save the Manatee Club is calling on all water enthusiasts to follow essential manatee safety tips to ensure the well-being of the imperiled manatee:

  • Obey Speed Zone Signs: Familiarize yourself with and adhere to posted speed limits to prevent collisions with manatees.
  • Reduce Glare with Polarized Sunglasses: Wear polarized sunglasses to enhance visibility and spot manatees below the water’s surface.
  • Recognize Manatee Signs: Learn to identify signs of manatees in the area, such as swirls or flat spots on the water caused by their movements.
  • Respect Manatee Sanctuaries: Keep a safe distance from posted manatee sanctuaries and avoid pursuing or harassing these marine mammals, as it is illegal and can disrupt their natural behaviors.
  • Report Distressed Manatees: In Florida, promptly report distressed, injured, tagged, or orphaned manatees to the Florida Fish and Wildlife Conservation Commission (FWC) at 1-888-404-FWCC (3922). Outside of Florida, report sightings to the appropriate state agency or rescue organization. A list of agencies to contact is available at savethemanatee.org/report.
  • Protect Seagrass Beds: Avoid boating over seagrass beds and shallow areas where manatees may be feeding. Stick to deep water channels while remaining vigilant, as manatees also utilize these channels during their travels.
  • Dispose of Fishing Line Responsibly: Anglers should properly dispose of or recycle used fishing line to prevent entanglement hazards for manatees.

“Each year, National Safe Boating Week provides an excellent reminder for all of us to be aware that we share our waterways with vulnerable manatees,” emphasized Patrick Rose, Aquatic Biologist and Executive Director of Save the Manatee Club. “With the recent Unusual Mortality Event on Florida’s East Coast claiming an alarming number of manatees’ lives, it is more crucial than ever to prevent preventable deaths caused by watercraft collisions. By following manatee-safe boating guidelines, such as obeying speed zones and remaining vigilant for manatees, everyone on the water can contribute to the protection of these gentle giants.”

Save the Manatee Club offers a range of free materials to help safeguard manatees and raise awareness about manatee-safe boating practices. Shoreline property owners and park or marina managers can order aluminum dock signs to alert others about the presence of manatees in their areas. Boaters and paddlers can request packets containing a safety tips card, a waterproof boat banner, and a decal to display on their vessels, providing the number to report manatees in distress. To view and request these materials, visit savethemanatee.org/resources. Save the Manatee Club will also be hosting a live webinar for National Safe Boating Week on Tuesday, May 21st at 6pm EST. To register, visit savethemanatee.org/register.

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Marine Life & Conservation Blogs

Book Review: Shells of the World

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Shells of the World: A Natural History by M.G. Harasewych

Shells of the world is a guide to the world of marine, shelled molluscs. And what a varied and interesting world it is. Some of my favourite things to find on a dive are detailed in this book, including disco clams (or Electric File Clams as they are correctly names), the cephalopods, giant clams and sea hares. There are also many on my wish list, top of which is the Nautilus.

Each chapter provides a detailed description of the species, along with beautiful images. You can dive deeper and discover where they live, both with global distribution and the habitat they prefer. Learn about their diet, reproduction and diversity.

Having dipped in and out of this lovely book over the past few weeks, it has inspired me to learn more about this group of animals that we see on most divers, wherever we are in the world. Some of the shells are incredibly intricate and beautiful. I have always agreed with never collecting, or touching, marine life. The description of a certain set of cone shells should be a warning to those that are happy to pick up marine life! One of the cone shells has a local name called the cigarette snail. Why? Because once the venom is in your system from this animal, you only have time to smoke one cigarette before the affects of the venom are fatal!

What the publisher says:

Mollusks are invertebrate animals with a remarkable natural history and a rich fossil record, and their shells are prized for their breathtaking variety and exquisite beauty. Shells of the World provides a wide-ranging look at the incredible diversity of marine mollusks. An informative introduction outlines the lineages covered, followed by a directory section, split into classes, that profiles a broad selection of different taxa to give a sense of their sheer numbers and variety.

  • Features hundreds of beautiful color photos, depicting both the live animals and their shells
  • Discusses mollusk evolution, anatomy, life cycles, behavior, and ecology
  • Describes unique characteristics, distribution, habitat, and size
  • Provides valuable insights into the conservation of the world’s marine mollusks
  • Ideal for malacologists and shell collectors everywhere

About the Author:

M. G. Harasewych is research zoologist emeritus and former curator in the Department of Invertebrate Zoology at the Smithsonian Institution’s National Museum of Natural History. A fellow of the American Association for the Advancement of Science, he is the author (with Fabio Moretzsohn) of The Book of Shells: A Life-Size Guide to Identifying and Classifying Six Hundred Seashells.

Book Details

Publisher: Princeton University Press

Hardcover

Price: £25

ISBN: 9780691248271

Published: 9th April, 2024

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