Turtles.

A turtle excluder device or TED is a specialized device that allows a captured sea turtle to escape when caught in a fisherman's net.

In particular, sea turtles can be caught when bottom trawling is used by the commercial shrimp fishing industry. In order to catch shrimp, a fine meshed trawl net is needed. This results in large amounts of other marine organisms being also caught as bycatch. When a turtle gets caught or entangled in a trawl net, it becomes trapped and is unable to return to the surface. Since sea turtles are air-breathing creatures with lungs, they eventually drown. 

The use of the devices ideally allow all by catch larger than ten centimeters (10 cm.) to escape the nets unharmed. This selectivity is achieved by metal grids integrated into the trawl net structure. The grids act as a barrier for large creatures such as turtles from passing through the bars into the back of the net.

A small opening in the net is then available either above or below the grid so that the creatures that are stopped by the TEDs are allowed to escape the net, relatively unharmed. Targeted species such as shrimp however, are pushed to the back of the net. As a conservation measure, turtle excluder devices are very effective. The rate of turtle mortality due to shrimping has been found to decrease by 97% with the use of TEDs.

 It is listed as Endangered under both Australia's Environment Protection and Biodiversity Conservation Act 1999 and Queensland's Nature Conservation Act 1992

 Today the main threat to the adult Sea turtles lies in shrimp trawls and crab

 fishing nets, to which many loggerheads annually fall victim. Furthermore,

adults are often injured by speedboat propellers and by swallowing fishing

hooks or getting caught in nets. Internationally animal protection organizations

take pains to monitor and protect the turtles' nesting grounds in Turkey,

 Greece, Bonaire, and Costa Rica. The turtles can also be found around

the Italian islands of Lampedusa and Linosa, off the coast of Sicily,

 and in Calabria, where it is particularly endangered. Furthermore,

the turtles are known to nest on the beaches of Cyprus,

especially Akamas and Alagadi Beach.

Many places during the nesting season, workers search the coastline to find

evidence of nests. Once found, a nest will be uncovered and the eggs

 carefully counted, if the nest is dangerously located the eggs will be moved

to a better spot. Plastic fencing will be placed at or near the surface

 to protect the eggs from large predators such as foxes or even dogs.

The barrier used is large enough to allow the hatch lings to emerge

without difficulty. The nests are checked daily for disturbances; several days

 after there is indication that the eggs have hatched the nest will be uncovered

and the tally of hatched eggs, undeveloped eggs, and dead hatchlings

will be recorded. If any hatch lings are found, they are either taken to be raised

and released, or taken to research facilities. Ones that appear strong and healthy

 may instead be released to the ocean. Typically, those that lacked the strength

 to hatch and climb to the surface by that point would have died otherwise.

 Most loggerheads that reach adulthood live for longer than 30 years, and can

often live past 198.7 years.

They are immune to the toxins of a Portuguese Man o' War as the turtles

 have often been seen feeding on them.

 Hatchlings require the travel from their nest to the ocean in order to build up strength for the journey ahead, so interfering by helping it to the ocean actually lowers their chances of survival