The submarine areas associated to the Jaizkibel mountain show a high diversity of habitats and species. With the aim of contributing to this knowledge, the OCEANA association carried out several immersions from 2008 to 2010. In this work we detail the results of such immersions. Overall, we identified more than 300 species (all of which … Read more
Marine litter has become a worldwide environmental problem, tainting all ocean habitats. The abundance, distribution and composition of litter and its interactions with fauna were evaluated in the upper S. Vicente canyon using video images from 3 remote operated vehicle exploratory dives. Litter was present in all dives and the abundance was as high as … Read more
The present note reports a new record of Rosalinda incrustans (Cnidaria: Hydrozoa) since its last reliable record in the Mediterranean Sea in 1958. Several colonies were recorded on the spider crab Anamathia rissoana off the Balearic Islands. The taxonomic history of R. incrustans, considered a putatively extinct species in a recent paper, is reviewed. … Read more
The sea star Coronaster briareus (Verrill Am J Sci (Ser III), 1882) is reported for the first time from the Mediterranean Sea. A total of 26 individuals were sighted in Maltese waters during ROV surveys made in July 2015 and June–July 2016. The identity of the species was confirmed through morphological examination of a specimen … Read more
Coralligenous and rhodoliths beds are two types of biogenic habitats, structured by calcareous red algae. Widely distributed along the Mediterranean Sea, these formations create complex three-dimensional structures, where countless marine species –including those of high commercial value and endangered ones– feed, rest and nest. These characteristics confer the two habitats a great ecological and economic … Read more
Oceana’s exploratory ROV’s dives in Western Mediterranean seamounts have collected more than 300 hours of video from deepsea ecosystem. Findings of threatened species and habitats, like carnivorous sponges, elasmobranches, coral gardens, sponge aggregations, coralligenous beds, etc. or even new species for science like giant foraminifera (Astrorhizidae), or new species for the Mediterranean (i.e. Anomocora fecunda), … Read more
New records of the Dendrophylliidae species Dendrophyllia laboreli in the Mediterranean Sea (Alboran basin), South Portugal and also in the Canaries are biogeographically relevant. The presence in the Mediterranean Sea and the recent wide distribution towards new locations in Canary Islands of such species is discussed in relation to the climatic fluctuations. In the Canaries … Read more
An overview is proposed of the hexactinellid sponge fauna of the Mediterranean Sea, including the description of a new species of Sympagella, S. delauzei sp. nov., collected by ROV during the exploration of deep-sea canyons of the NW Mediterranean and of deep banks and seamounts of the Alboran Sea. The type species of Sympagella, S. … Read more
Isidella elongata is a candelabrum-shaped alcyonacean forming important facies on the bathyal muddy bottoms of the Mediterranean Sea, currently considered a sensitive habitat and heavily impacted by deep-sea fisheries. Until a few decades ago, this facies was a widespread habitat of the deep Mediterranean seabed and I. elongata was a common species in the trawling … Read more
The advent of deep-sea exploration using video cameras has uncovered extensive sponge aggregations in virtually all oceans. Yet, a distinct type is herein reported from the Mediterranean: a monospecific reef-like formation built by the lithistid demosponge Leiodermatium pfeifferae. Erect, plate-like individuals (up to 80 cm) form bulky clumps, making up to 1.8 m high mounds … Read more
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We have already protected nearly 4 million square miles of ocean and innumerable sea life - but there is still more to be done.
Oceana in Europe gratefully acknowledges EU funding support.
