Ocean

One of the few cases where you want a counterclockwise polygon because the ocean covers greater than one hemisphere. The example demonstrates improved antimeridian stitching in TopoJSON 1.4.1.

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  background: #fcfcfa;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 960,
    speed = 1e-2,
    start = Date.now();

var sphere = {type: "Sphere"};

var projection = d3.geo.orthographic()
    .scale(width / 2.2)
    .clipAngle(90)
    .translate([width / 2, height / 2])
    .precision(.5);

var graticule = d3.geo.graticule();

var canvas = d3.select("body").append("canvas")
    .attr("width", width)
    .attr("height", height);

var context = canvas.node().getContext("2d");

var path = d3.geo.path()
    .projection(projection)
    .context(context);

d3.json("topo.json", function(error, topo) {
  if (error) throw error;

var ocean = topojson.feature(topo, topo.objects.ocean),
      grid = graticule();

d3.timer(function() {
    projection.rotate([speed * (Date.now() - start), -15]);

context.clearRect(0, 0, width, height);

context.beginPath();
    path(sphere);
    context.fillStyle = "#fff";
    context.fill();

context.beginPath();
    path(grid);
    context.lineWidth = .5;
    context.strokeStyle = "#ddd";
    context.stroke();

context.beginPath();
    path(ocean);
    context.fillStyle = "rgba(70,130,180,.5)";
    context.fill();

context.beginPath();
    path(sphere);
    context.lineWidth = 1.5;
    context.strokeStyle = "#000";
    context.stroke();
  });
});

d3.select(self.frameElement).style("height", height + "px");

</script>

https://d3js.org/d3.v3.min.js

https://d3js.org/topojson.v1.min.js