Le 1er octobre 2023
Itinéraire : port de la Madrague - pointe de l'Ermitage - Ile Longue - Ile de la Ratonnière - Ile Longue - Pointe des Chevaliers - grottes de la calanque du Blé - Pointe des Chevaliers - Pain de Sucre - Pointe de l'Ermitage - port de la Madrague
Poursuite du cabotage en Provence cristalline, ce jour la côte ouest de la presqu’île de Giens, déjà parcourue plusieurs fois pour la beauté de ses îlots aux schistes colorés et sculptés, et pour ses 2 grottes marines dont l’une est sans doute la plus profonde de la Méditerranée française.
On profitera encore et toujours de conditions idéales, mer calme et chaude pour la saison (21-22°C), pas de méduse, visibilité excellente, de quoi observer sans gêne de nombreux poulpes autour des îlots Longue et Ratonnière, et dans la grotte de la Calanque du Blé chapon, murène, langouste et doris dalmatien (pour la première fois !) à quelques mètres les uns des autres, sous les beaux spéléothèmes qui rendent cette cavité marine unique. Dommage que les nombreux visiteurs de cette grotte en paddle ou kayak, voire à la nage avec l’accès terrestre à la Calanque du Blé, ne mettent pas la tête ou plutôt le masque sous l’eau !
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les schistes bleus, gris, ocres, marrons.... de l'Ile Longue
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les bras ouverts pour souhaiter la bienvenue sur mon île
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les 3 poulpes rencontrés près de l'île, dont 2 proches de quelques mètres, le plus craintif prendra ses jamb... bras à son cou devant celui qui reste impavide face aux plongeurs
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arrivée dans les grottes de la Calanque du Blé
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la grotte ouest, bien concrétionnée dans sa première salle...
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... et riche en vie marine malgré les apparences trompeuses : bien sûr zoanthaires jaunes...
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... mais aussi une langouste...
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... un chapon...
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... des vers marins (spirographes) plus gracieux que leurs homologues terrestres...
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... éponge pierre...
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... et son prédateur le nudibranche doris dalmatien (première rencontre pour moi ce jour)
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... et une murène souriante à la sortie
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