Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.

In a mixing bowl, combine the cooked shrimp, crab meat, and cream cheese. Fold in finely chopped green onions, lemon juice, and garlic powder, seasoning with salt and pepper to taste.

Unroll the crescent roll dough on a floured surface, and separate the triangles.

Place a spoonful of filling on the wider end of each triangle, and roll gently toward the pointed end, tucking in the edges to seal.

Arrange on the baking sheet, leaving space between each. Bake for 12-15 minutes until golden brown.

Let cool on the baking sheet for about 5 minutes before serving warm.