The Greek archipelago was at the forefront of the large number of refugees and migrants who came to Europe in 2015.
Since the EU-Turkey refugee agreement in 2016, the number of migrants reaching the Greek islands has decreased and last year the number was record low.
But since last year, data on so-called pushbacks has also skyrocketed - that is, migrants are prevented from crossing the border to apply for asylum.
Greece is accused of illegal deportations
The Greek Coast Guard and the EU Joint Border Force Frontex are accused by the UN, Médecins Sans Frontières and Human Rights Watch of routinely carrying out pushbacks against migrants and refugees trying to reach Greece from Turkey.
Greece denies all information about pushbacks in an email to SVT.
There are more stories about the abusive approach of the Greek Coast Guard.
Recently, a lawsuit was filed in the European Court of Justice against the Greek state for an incident in October last year.
Must have left migrants on life rafts without phones and food
The application describes how a Greek rescue ship kept a boat with migrants until motorboats with masked men showed up.
The passengers must then have been divided into two boats belonging to the coast guard where the 10-15 masked men, who must also have been armed, seized telephones, passports and money.
Several also state that they were beaten on the boats.
Passengers must then have been forced to sit in life rafts, without life jackets, food or the opportunity to call for help.
After more than a day at sea, they were picked up and rescued by the Turkish Coast Guard.
- Pushback is not even really the right term here.
Here, the authorities have deliberately abandoned people at sea who risked dying without the opportunity to call for help or apply for asylum, says lawyer Natasha Ntailiani, at Lesbos Legal Center, who represents some of the survivors.
See how migrants are rescued from the high seas after being subjected to "pushbacks" in the video above.