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Record 2-tonne sunfish found off Mediterranean coast of Ceuta

Saturday, October 16th 2021, 12:57 pm - The fish was removed and returned to the water smoothly, both on Oct. 4, to the relief of fishermen and scientists aboard, who watched as the creature vanished switfly into the 700-metre depths of its home.

By Miguel Gutierrez

MADRID (Reuters) - Marine biologist Enrique Ostale could not believe his eyes when he saw the enormous sunfish tangled in the nets of a tuna-fishing boat off the Mediterranean coast of Ceuta earlier this month.

The mammoth sunfish, a species classed as vulnerable and not eaten in Europe, was 3.2 metres (10.5 feet) long, 2.9 metres (9.5 feet) wide, Enrique Ostale said in an interview on Thursday. The find, which he was called to assess, was a record for the area which, due to tides and sunfish migratory patterns, has no shortage of such encounters.

SEE ALSO: Ocean biodiversity hotspot discovered off coast of Makkovik, thanks to fisherman

"We tried to put it on the 1,000-kg (2,204.6-lb) scale but it was too heavy. It would've broken it," said Ostale, who heads Seville University's Marine Biology Lab in the Spanish enclave of Ceuta on the north coast of Africa.

"Based off its corpulence and compared with other catches, it must've weighed around 2 tonnes (4,409 lb)."

The fish was first isolated in an underwater chamber attached to the boat before being lifted aboard using a crane, where it stayed for a few minutes while Ostale and his fellow biologists took measurements, photographs and DNA samples.

Sunfish/Estación de Biología Marina del Estrecho (Ceuta) – Universidad de Sevilla Marine biologist Enrique Ostale could not believe his eyes when he saw the enormous sunfish tangled in the nets of a tuna-fishing boat off the Mediterranean coast of Ceuta earlier this month. (Estación de Biología Marina del Estrecho (Ceuta) – Universidad de Sevilla)

With dark grey skin, rounded grooves in its flanks and a large, prehistoric-looking head, this particular specimen was likely a mola alexandrini, one sub-species of the mola sunfish genus, which sports a distinctively stub, scalloped back fin.

"I was stunned. We'd read about such individuals ... but never thought we'd actually touch one day," Ostale said.

"But it was also stressful: you're on a boat in the middle of the water, there's a crane moving huge weight, a live animal. We couldn't waste a moment and had to avoid accidents."

But the fish was removed and returned to the water smoothly, both on Oct. 4, to the relief of fishermen and scientists aboard, who watched as the creature vanished switfly into the 700-metre depths of its home.

Thumbnail courtesy of Estación de Biología Marina del Estrecho (Ceuta) – Universidad de Sevilla.

(Reporting by Miguel Gutierrez, Writing by Clara-Laeila Laudette; Editing by Richard Chang)

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