According to the IOM, 117,795 refugees entered Europe by sea in 2017 so far, with nearly 83 percent arriving in Italy.
Migrants don't usually disembark on Spanish beaches but it has happened before, especially near the cities Melilla and Ceuta, which border Morocco.
According to Otero, 7,900 people arrived in Andalusia in the first seven months of the year, nearly triple the number of arrivals in the same period in 2016.
The jet ski can then be seen rushing off, presumably so the smuggler can pick up another migrant to bring ashore on the Spanish enclave.
The two incidents were the latest evidence of the significant uptick in the number of migrants seeking to make Spain their European point of entry. According to data compiled by the International Organization for Migration, between the start of the year and July 16, 7,389 migrants had arrived in Spain on what is known as the "Western Mediterranean Route". Overall numbers have fallen by nearly 60 per cent from the same period the previous year.
Meanwhile, 10 men from sub-Saharan Africa were rescued off the coast of Spain.
Experts say it's hard to pinpoint why the water route to Spain via Morocco has become a preferred option for some migrants.
"It's possible that Spain will outperform Greece this year", Mr Millman said.
On Wednesday, there also surfaced a video of a boatload of migrants arriving at Los Alemanes beach on the Spanish coastline, some 19 miles from the African coast.
Spain is still far behind Italy, which received 96,861 until 9 August, according IOM figures.
"Otero noted that Spain was capable of welcoming more refugees, adding that it could offer legal alternative ways to reach the country, such as humanitarian or student visas, adding that Spain was a somewhat safer route than those into Italy or Greece".
Due to good weather conditions, Spain has seen an increase in attempts by migrants to reach its shores over the past few weeks.