The grey Saturday walk stayed with Mara long after she came home, not because it had been dramatic, but because it had been slow. She remembered kneeling by the pool and waiting for the water to clear, remembering how Tess had once taught her to do exactly that on a summer afternoon years earlier, when they were younger and the world had felt simpler. Tess had said, in her quiet way, that if you stared too hard or stirred the water, you would miss what was there, and that the pool would show you things only if you were patient. Mara had laughed then, because patience had never been her gift, but on that grey afternoon she finally understood what her sister had meant. The starfish had not moved for her. The seaweed had not performed. The anemone had opened in its own time, in cold water, under a grey sky, without any audience at all. Mara thought about that on the walk home, about how much of Tess's love for the shore had nothing to do with being seen or praised, and how the photographs online had tried to turn something private and patient into something public and hurried. Sending only three pictures, with no words, had felt like the right answer to that, because it gave Tess the pool itself, without a caption telling her what to feel about it.
On Sunday evening, Tess came downstairs in her pyjamas, looked at the three photographs on her phone, and said, 'Let's go back next week. Together, but I'll do the talk.'
The marine centre smelled of salt and clean glass on Saturday morning, and Tess walked in ahead of Mara for the first time in weeks. The door was heavier than she remembered, or perhaps she had simply forgotten how it felt to push it open herself, and the small bell above it gave its familiar, uneven chime. Light fell in pale bars across the entrance hall, where the tide chart hung beside a corkboard of volunteer rotas and faded photographs of school groups. Tess stopped for a moment just inside, breathing in the cool air, letting her eyes adjust. Behind her, Mara waited on the step, hands in the pockets of her jacket, deliberately not stepping forward. She had driven them there in their mother's old car, had talked the whole way about nothing much at all, and now she stood back as if the doorway itself were a line she was not meant to cross first.
Tess had not planned what she would say. On the drive over, she had rehearsed small, ordinary sentences in her head — hello, I'm back, where do you need me — and discarded each one as too formal or too apologetic. She did not owe an apology for being away, she knew that in the part of her mind that thought clearly, but knowing a thing and feeling it were not the same. Her sketchbook was in her bag, its cover worn at the corners, and the weight of it against her hip was both comforting and strange. She had not brought it to show anyone. She had brought it because it belonged with her, the way her paint-stained apron did, and leaving it at home would have felt like leaving a part of herself behind.
Ms. Okafor was at the front desk, sorting leaflets into neat piles. She looked up when the bell rang, and her face opened into a smile that was warm without being startled, as if Tess's return were entirely expected and entirely welcome. "Tess," she said. "Good morning. It's good to see you." She did not ask where Tess had been, or how she was feeling, or whether she was all right now. She simply pushed a leaflet pile a little to one side to make room, and asked, in the same easy tone she used for any volunteer, "Would you like the tanks this morning, or the touch pool? June's already in the back, getting the feeding rota ready."
Tess felt something loosen in her chest, a knot she had not quite named. "The tanks, please," she said, and her voice sounded steadier than she had expected. "I can start there."
"Perfect," Ms. Okafor said. "Mara, there's coffee in the staff room if you'd like to wait, or you're welcome to look around. No rush either way."
Mara nodded, grateful for the lack of fuss. "I'll look around for a bit," she said, and then, catching herself, added, "Actually, I'll wait in the staff room. Tess knows where to find me." It was a small choice, and she made it deliberately: to be nearby without hovering, to be present without making her presence the point. She followed Ms. Okafor's directions down the short corridor, and left Tess standing in the entrance hall with the morning light on her shoulders.