Three are endangered:
"Common Name: Loggerhead - named for its exceptionally large head.
Scientific Name: Caretta caretta
Description: Head is very large with heavy strong jaws. Carapace is bony without ridges and has large, non-overlapping, rough scutes (scales) present with 5 lateral scute. Carapace is heart shaped Front flippers are short and thick with 2 claws. While the rear flippers can have 2 or 3 claws. Carapace is a reddish-brown with a yellowish-brown plastron. Hatchlings have a dark-brown carapace with flippers pale brown on margins.
Size: Typically 2.5 to 3.5 feet in carapace length (73-107 cm).
Weight: Adult weigh up to 350 pounds (159 kg).
Diet: Primarily carnivorous and feed mostly on shellfish that live on the bottom of the ocean. They eat horseshoe crabs, clams, mussels, and other invertebrates. Their powerful jaw muscles help them to easily crush the shellfish.
Habitat: Prefer to feed in coastal bays and estuaries, as well as in the shallow water along the continental shelves of the Atlantic, Pacific and Indian Oceans.
Nesting: Nest at intervals of 2, 3, or more years. They lay 4 to 7 nests per season, approximately 12 to 14 days apart. Lays average of between 100 to 126 eggs in each nest. Eggs incubate for about 60 days.
Range: Found in all temperate and tropical waters throughout the world."
Info thanks to Loggerhead Turtles.
"Common Name: Olive ridley - named for its olive green colored shell
Scientific Name: Lepidochelys olivaceaf
Description: Head is quite small. Carapace is bony without ridges and has large scutes (scales) present. Carapace has 6 or more lateral scutes and is nearly circular and smooth. Its body is deeper than the very similar Kemp's Ridley sea turtle. Both the front and rear flippers have 1 or 2 visible claws. There is sometimes an extra claw on the front flippers. Juveniles are charcoal grey in color, while adults are a dark grey green. Hatchlings are black when wet with greenish sides.
Size: Adults measure 2 to 2.5 feet (62-70 cm) in carapace length.
Weight: Adults weigh between 77 and 100 pounds (35-45 kg).
Diet: Have powerful jaws that allow for an omnivore diet of crustaceans (suach as shrimp & crabs), mollusks, tunicates, fish, crabs, and shrimp.
Habitat: Generally found in coastal bays and estuaries, but can be very oceanic over some parts of its range. They typically forage off shore in surface waters or dive to depths of 500 feet (150 m) to feed on bottom dwelling crustaceans.
Nesting: Nest every year in arribadas. Nests 2 times each season. Lays an average of over 105 eggs in each nest. Eggs incubate for about 55 days. An average clutch size is over 110 eggs which require a 52 to 58 day incubation period.
Range: The olive ridley inhabits tropical and subtropical waters of the Pacific, Indian and Atlantic Oceans."
Info thanks to [link urk=http://www.cccturtle.org/olive-ridley.htm]Olive Ridley Turtles[/link].
