Migrants who survived say the boat was carrying 41 people when it set off for the Canaries in a particularly dangerous route due to strong currents.
Migrants and asylum seekers were seen being brought into the port of Dover in southeast England aboard lifeboats and Border Force vessels after being picked up in the Channel.
A new report from the UN refugee agency says the number of asylum seekers that have died or gone missing doubled last year, with land and sea routes becoming more dangerous.
The UN's refugee agency has urged the UK to refrain from transferring asylum seekers and irregular migrants to Rwanda for processing, saying London is abdicating responsibility.
Australia detains immigrants for an average of 689 days, a period 12 times longer than the US, Human Rights Watch says.
Turkish authorities also arrested 10 people for alleged human smuggling.
One migrant has said his cousin drowned at sea after he and his family were pushed overboard by the Greek Coast Guard.
Seven migrants and asylum seekers have died, suffering from severe hypothermia, in a packed wooden boat off the coast of the Italian island of Lampedusa.
More than 600 migrants, refugees, and asylum seekers have been arrested by Libyan authorities at a protest camp outside a closed aid centre in Tripoli, aid groups say.
President Biden's administration will restart a controversial Trump-era border programme that forces asylum seekers to wait in Mexico for US immigration hearings, in keeping with a federal court order.
"This systematic practice endangers the life of people, including young children, that often end up abandoned in the middle of the sea," refugee rights groups say in a letter to Pope Francis ahead of his visit to Greece.
The current escalations at the border are not the result of migrating asylum seekers or the actions of smugglers, but rather the political decisions of Belarus, Poland, and the EU.
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