Facts About the Loggerhead Sea Turtle: 15 Things to Know (2026)

What are the key facts about the loggerhead sea turtle? Loggerheads are large, reddish-brown sea turtles named for their big heads and crushing jaws. Adults weigh about 200 to 350 pounds, eat hard-shelled prey such as crabs and whelks, and females mature around 35. The species is Vulnerable worldwide, and US populations are protected under the Endangered Species Act.

Loggerheads lay more than 100,000 nests a year on US beaches, according to NOAA, yet most people know little about their lives at sea. These facts about the loggerhead sea turtle come from NOAA Fisheries, the IUCN, the Florida Fish and Wildlife Conservation Commission (FWC) and university research. You will learn how big they get, where they travel, what they eat, how they nest and how you can help them survive.

Facts About the Loggerhead Sea Turtle at a Glance

Here are 15 core facts about the loggerhead sea turtle in one table. Most figures come from NOAA Fisheries, the federal agency that manages sea turtles at sea; the rest come from the National Park Service and the IUCN. Each loggerhead turtle fact is explained in more detail below.

Sources: NOAA Fisheries, National Park Service (name origin, hatchling size) and IUCN Marine Turtle Specialist Group (accessed October 2026).

Loggerhead Sea Turtle Appearance and Size Facts

The name says it all. The National Park Service notes that loggerheads are named for their very large heads, and the conservation group SEE Turtles links that head to a strong, crushing jaw. NOAA describes a slightly heart-shaped, reddish-brown top shell and a pale yellowish bottom shell.

• Adults: NOAA lists 2.5 to 3.5 feet and 200 to 350 pounds. SEE Turtles gives a wider range of up to 4 feet and 400 pounds, so very large individuals exist.
• Hatchlings: They are only about 1.6 to 1.9 inches long, according to the National Park Service. NOAA describes them as mostly dark brown with white to gray-white flipper edges.
• Jaws: NOAA says their jaws are adapted for crushing prey, which lets them feed on crabs and shellfish.

Size is one of the easiest facts about the loggerhead sea turtle to picture: at 200 to 350 pounds, a typical adult loggerhead turtle outweighs most adult people.

Where Do Loggerhead Sea Turtles Live?

Loggerheads live in every ocean. NOAA says they are found mainly in subtropical and temperate waters of the Atlantic, Pacific and Indian Oceans and the Mediterranean Sea. In the Atlantic, they range from Newfoundland, Canada, to Argentina.

Young loggerheads spend their first 7 to 15 years drifting in the open ocean, says NOAA. The National Park Service notes that hatchlings and juveniles shelter and feed in floating mats of Sargassum seaweed. Older juveniles then move into coastal waters for a decade or more before they mature.

Record-setting migrations

One of the most surprising facts about the loggerhead sea turtle is how far it travels. NOAA reports that young loggerheads from beaches in Japan and Australia have been tracked to feeding grounds off Baja California, Mexico, Peru and Chile, nearly 8,000 miles away. Some may spend up to 20 years growing there before returning west to breed.

How do they find their way? Research led by Kenneth Lohmann at the University of North Carolina, reported by Scientific American, found that hatchling loggerheads can sense the angle and strength of Earth’s magnetic field. Those cues help Florida hatchlings stay inside the warm North Atlantic gyre during their first ocean journey.

What Do Loggerhead Sea Turtles Eat?

Diet is one of the facts about the loggerhead sea turtle that ties back to its name, because the big head houses the crushing jaws it needs. The loggerhead turtle is mainly a carnivore. NOAA says juveniles and adults in coastal waters feed mostly on bottom-dwelling invertebrates such as mollusks, crustaceans and horseshoe crabs. SEE Turtles names crabs, conchs and whelks as typical prey. NOAA adds that they occasionally eat plant material.

Young turtles in the open ocean eat a wide range of floating items. NOAA warns that they may mistake plastic fragments for food, which is one reason marine debris is a serious threat.

Facts About the Loggerhead Sea Turtle Life Cycle

Loggerheads grow slowly. NOAA says females reach maturity at about 35 years. The agency’s estimates of lifespan range from 70 to 80 years or more, and it notes the exact figure is unknown. That long road to adulthood means a single lost nesting female represents decades of survival.

Source: NOAA Fisheries loggerhead species page.

Nesting and hatchlings

In the Northern Hemisphere, NOAA says egg-laying runs from late April to early September. Females nest alone at night, usually near the beach where they hatched, and lay three to five nests a season about two weeks apart. The National Park Service gives a wider range of one to seven nests and 50 to 130 eggs per nest.

Sand temperature sets each hatchling’s sex. NOAA explains that cooler sand produces males and warmer sand produces females. Hatchlings find the sea by moving away from the dark dune line toward the brighter ocean horizon, which is why beachfront lights can send them the wrong way.

Florida is a nesting stronghold

The FWC Statewide Nesting Beach Survey counted 100,951 loggerhead nests in 2025. NOAA says only Peninsular Florida and Oman host more than 10,000 nesting females a year, and it calls Oman’s population the world’s second largest. SEE Turtles estimates about 30,000 nests a year on Masirah Island, Oman.

Is the Loggerhead Sea Turtle Endangered?

Status is among the most searched facts about the loggerhead sea turtle, and the answer depends on where the turtle lives. The IUCN Marine Turtle Specialist Group lists the loggerhead as Vulnerable worldwide, with its 10 assessed subpopulations ranging from Critically Endangered to Least Concern. Some older sources still say “Endangered,” so check the date on any status claim.

Under the US Endangered Species Act, NOAA recognizes nine distinct population segments:

Source: NOAA Fisheries. The US East Coast and Gulf nesters belong to the Northwest Atlantic segment.

Trends vary. NOAA reports the North Pacific segment has declined 50% to 90% over about 60 years, and the South Pacific fell from about 3,500 nesting females a year in 1977 to about 500. NOAA lists bycatch in fishing gear, vessel strikes, loss of nesting beaches, pollution, egg predators and direct harvest among the main threats.

How You Can Help Loggerhead Sea Turtles

Knowing facts about the loggerhead sea turtle matters most when it changes what we do on the beach. FWC asks beachgoers to follow a few simple rules during nesting season, as reported by WWSB/ABC7 in September 2026:

• Skip flashlights, phone lights and flash photography on the beach at night.
• Close curtains and turn off unneeded outdoor lights at beachfront rentals.
• Stay at least 50 feet from nesting turtles and hatchlings.
• Fill in holes dug in the sand before you leave, since they can trap hatchlings.

On the water, NOAA advises boaters to slow down and shift to neutral if a turtle is within 50 yards. Cutting back on single-use plastics can also help, since NOAA notes young turtles may mistake plastic for food.

Facts About the Loggerhead Sea Turtle: FAQs

Why is it called a loggerhead?

It is named for its very large head, which goes with a strong, crushing jaw for hard-shelled prey.

How big do loggerhead sea turtles get?

NOAA lists adults at 2.5 to 3.5 feet and 200 to 350 pounds; some reach up to 400 pounds.

How long do loggerhead sea turtles live?

NOAA estimates 70 to 80 years or more, but the exact lifespan is unknown.

What do loggerhead sea turtles eat?

Mostly crabs, mollusks, whelks, conchs and horseshoe crabs, plus occasional plant material.

Where do loggerheads nest in the US?

Mainly in Florida, which recorded 100,951 loggerhead nests in 2025, with more nesting north to the Carolinas.

Is the loggerhead sea turtle endangered?

Globally it is Vulnerable. In the US, five population segments are endangered and four threatened.

Can I keep a loggerhead as a pet?

No. Wild sea turtles are federally protected, and harming or keeping them is illegal.

Final Verdict: Facts About the Loggerhead Sea Turtle

The key facts about the loggerhead sea turtle add up to a slow-growing, long-lived ocean traveler that needs dark, quiet beaches to nest. Adults weigh 200 to 350 pounds, mature at about 35 and cross whole oceans. Simple steps, like keeping beaches dark, help them survive.