Green sea turtle Chelonia mydas grazing on seagrass Red Sea
Marine Life Species Guide

Green Sea Turtle

Chelonia mydas

The Red Sea's most commonly-encountered turtle — resident reef populations, calm around divers, and reliable on almost every reef.

At a glance

Common nameGreen Sea Turtle
ScientificChelonia mydas
SeasonYear-round
Depth5 – 30 m
Max size1.5 m
StatusEndangered

How to identify

Green turtles are distinguishable from the Red Sea's other common turtle species (the hawksbill) by:

  • Rounded, smooth carapace edge (hawksbills have a serrated edge and more pointed scutes).
  • Small, rounded head with one pair of prefrontal scales (hawksbills have two pairs).
  • Short, blunt beak — they're grazers, not predators.
  • Single claw on each front flipper.
  • Adult carapace length 80-150 cm; larger than most hawksbills you'll encounter.

Best Red Sea sites

Marsa Mubarak & Abu Dabbab (Marsa Alam)Shore-dive sites with resident turtles feeding on seagrass beds. Snorkel-friendly.
Giftun Island lagoons (Hurghada)Reliable sightings on most day-boat trips — see Hurghada guide.
Sha'ab El Erg (Hurghada)Large resident population at this horseshoe reef.
Ras Umm Sid (Sharm El Sheikh)Resident turtle cleaning station — frequent, reliable encounters.
Makadi Bay & Sahl Hasheesh house reefsCommon on shore dives, especially in seagrass patches near the drop-off.
Footage of resident green turtles at Red Sea cleaning stations and seagrass beds.

When to see them

Resident turtles are visible year-round. Nesting season on Egyptian beaches peaks July-September — Zabargad Island is the most significant Red Sea nesting site, though access is restricted.

Green turtles are present all year — viewing chances are essentially weather-dependent, not seasonal.

Behaviour

Adult green turtles spend their days grazing on seagrass and occasionally algae. They surface to breathe every 5-30 minutes depending on activity level — resting turtles can stay down much longer. Cleaning-station behaviour is common: a turtle parks on a coral head and lets cleaner wrasse groom its shell and flippers.

They are remarkably tolerant of divers if approached calmly. Many sites have individuals so accustomed to human presence that they're essentially indifferent — which is a privilege, not an invitation to harass.

Conservation status

The green turtle is listed as Endangered by the IUCN. Red Sea populations are affected by:

  • Boat strikes — propeller injuries are unfortunately common on the carapace.
  • Plastic ingestion — plastic bags resemble jellyfish, a prey item for juveniles.
  • Nesting-beach disturbance — lighting, vehicles, and construction disrupt nesting females.
  • Bycatch in gillnets — less of an issue in the Egyptian Red Sea than elsewhere but not zero.

Diving with turtles responsibly

  • Never touch. Skin mucus loss can cause infection.
  • Do not block access to the surface — turtles breathe air, and stressing them by blocking ascent can drown them.
  • Give space when they are feeding. A feeding turtle is already stressed by your presence; back off 3+ metres.
  • Keep lights off at night near known nesting beaches. Torch beams disorient hatchlings.
  • Report injured or entangled turtles to HEPCA (Hurghada Environmental Protection & Conservation Association).
Pro tip: The best turtle encounters come at cleaning stations. Park 3 metres away, hold position, and watch the cleaner fish work. Most turtles will accept you as "furniture" after 30 seconds and behave naturally.

Frequently asked questions

Reliable sites include Marsa Mubarak and Abu Dabbab (shore-accessible turtle and seagrass sites near Marsa Alam), Giftun Island lagoons and Sha'ab El Erg in Hurghada, Ras Umm Sid in Sharm El Sheikh (resident cleaning station), and house reefs at Makadi Bay and Sahl Hasheesh.

Green turtles are resident year-round, so encounters are essentially weather-dependent rather than seasonal. Nesting season on Egyptian beaches peaks July to September, with Zabargad Island the most significant nesting site (access restricted).

Green turtles have a rounded smooth carapace edge, small rounded head with a short blunt beak, and one pair of prefrontal scales. Hawksbills have a serrated carapace edge, two pairs of prefrontal scales, and a sharper hooked beak. Green turtles also tend to be larger as adults.

No. Touching turtles damages the protective mucus layer on their skin and shell, which can cause infections. Beyond that, blocking a turtle from reaching the surface to breathe can cause panic and drowning. Stay 3 metres back, especially at cleaning stations and during feeding, and let the turtle dictate the encounter.

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Scientific reference: Wikipedia — Green Sea Turtle

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