.container
	.whaleContainer
		- for(var x = 1; x <= 4; x++)
			.whalePos(class="size" + x)
				.whaleRotate(class="size" + x)
					.whale
					.fin
	.cPos
		.cc
			.circle.one
			.circle.two
			.circle.three
			.circle.four
	.triangleContainer
		.triangleBar
		- for(var x = 1; x < 20; x++)
			span(class="triangle")
	.gradientContainer
		.overlay.one
		.gradient
			- for(var x = 1; x < 39; x++)
				span(class="ray" + x)
			- for(var x = 1; x < 39; x++)
				span(class="ray" + x)
	.rocks
		.rock.one
		.rock.two
		.rock.three
		.rock.four
	.bubbleContainer
		- for(var x = 1; x < 50; x++)
			span(class="bubbleY" + x)
				span(class="bubbleX" + x)


			
View Compiled
$rayHeight: 400px;
$teal1: #AFE0E4;
$teal2: #C0E6E9;
$teal3: #84CDD4;
$teal4: #7EC9D1;
$teal5: #97D6DC;
$teal6: #AEDEE2;
$teal7: #96D3D8;
$teal8: #9CD7DD;
$teal9: #7ECBD3;
$teal10: #AFE0E4;
$teal11: #B6DFE3;
$teal12: #84CDD4;

.container {
	position: relative;
	width: 160px;
	height: 335px;
	background: linear-gradient(to bottom, #96C7CC 0%, #C3DDD8 30%, #C3DDD8 100%);
	border-radius: 100px;
	overflow: hidden;
}

.gradientContainer {
	// border: 1px solid #ff9900;
	margin-top: 95px;
	height: 300px;
	overflow:hidden;
	background: linear-gradient(to bottom, #C3E5E5, #0D3F53);
	position: absolute;
	z-index: 200;
}
.overlay {
	width: 100%;
	height: 240px;
	position: absolute;
	&.one {
		background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 10%, #0B4558 100%);
		z-index: 100;
	}
}
.gradient {
	margin-top: -100px;
	// border: 1px solid red;
	width: 620px;
	height: 400px;
	transform: translateX(-50px) rotate(20deg);
	animation-name: gradient;
	animation-duration: 10s;
	animation-iteration-count: infinite;
	animation-fill-mode: forwards;
	animation-timing-function: linear;
	transform-style: preserve-3d;
}

@keyframes gradient {
	0% {
		transform: translateX(-50px) rotate(20deg);
	}
	100% {
		transform: translateX(-379px) rotate(20deg);
	}
}

@for $i from 1 through 26 {
	.ray#{$i} {
		height: $rayHeight;
		display: inline-block;
		animation-name: blinkRay;
		animation-duration: random(4) + s;
		animation-delay: random(4) + s;
		animation-iteration-count: infinite;
		animation-direction: alternate;
		animation-timing-function: linear;
		opacity: 1;
	}
}

@keyframes blinkRay {
	0% {
		opacity: 1;
	}
	100% {
		opacity: 0.4;
	}
}

.ray1, .ray14, .ray27 { width: 20px; background: linear-gradient(to bottom, $teal1 0%, $teal1 40%, rgba(255, 255, 255,0) 100%); }
.ray2, .ray15, .ray28 { width: 20px; background: linear-gradient(to bottom, $teal2 0%, $teal2 30%, rgba(255, 255, 255,0) 100%); }
.ray3, .ray16, .ray29 { width: 15px; background: linear-gradient(to bottom, $teal3 0%, $teal3 20%, rgba(255, 255, 255,0) 100%); }
.ray4, .ray17, .ray30 { width: 5px; background: linear-gradient(to bottom, $teal4 0%, $teal4 10%, rgba(255, 255, 255,0) 100%); }
.ray5, .ray18, .ray31 { width: 10px; background: linear-gradient(to bottom, $teal5 0%, $teal5 40%, rgba(255, 255, 255,0) 100%); }
.ray6, .ray19, .ray32 { width: 10px; background: linear-gradient(to bottom, $teal6 0%, $teal6 30%, rgba(255, 255, 255,0) 100%); }
.ray7, .ray20, .ray33 { width: 10px; background: linear-gradient(to bottom, $teal7 0%, $teal7 20%, rgba(255, 255, 255,0) 100%); }
.ray8, .ray21, .ray34 { width: 5px; background: linear-gradient(to bottom, $teal8 0%, $teal8 40%, rgba(255, 255, 255,0) 100%); }
.ray9, .ray22, .ray35 { width: 25px; background: linear-gradient(to bottom, $teal9 0%, $teal9 60%, rgba(255, 255, 255,0) 100%); }
.ray10, .ray23, .ray36 { width: 10px; background: linear-gradient(to bottom, $teal5 0%, $teal5 50%, rgba(255, 255, 255,0) 100%); }
.ray11, .ray24, .ray37 { width: 10px; background: linear-gradient(to bottom, $teal6 0%, $teal6 40%, rgba(255, 255, 255,0) 100%); }
.ray12, .ray25, .ray38 { width: 10px; background: linear-gradient(to bottom, $teal7 0%, $teal7 20%, rgba(255, 255, 255,0) 100%); }
.ray13, .ray26, .ray39 { width: 5px; background: linear-gradient(to bottom, $teal8 0%, $teal8 10%, rgba(255, 255, 255,0) 100%); }

.cPos {
	position: relative;
	top: 30%;
	left: calc(50% - 80px);
	z-index: 9;
	transform: translateY(0) scale(1);
	animation-name: sunset;
	animation-duration: 10s;
	animation-iteration-count: infinite;
	animation-direction: alternate;
	animation-timing-function: linear;
}

@keyframes sunset {
	0% {
		transform: translateY(0) scale(1);
	}
	100% {
		transform: translateY(10px) scale(.9);
	}
}
.cc {
	display: flex;
	align-items: center;
	justify-content: center;
}
.circle {
	position: absolute;
	background: #FBFEF9;
	border-radius: 50%;
	&.one {
		width: 160px;
		height: 160px;
		opacity: .2;
	}
	&.two {
		width: 130px;
		height: 130px;
		opacity: .2;
	}
	&.three {
		width: 100px;
		height: 100px;
		opacity: .2;
	}
	&.four {
		width: 70px;
		height: 70px;
	}
}

.rocks {
	position: relative;
	z-index: 2000;
	.rock {
		position: absolute;
		&.one {
			top: 280px;
			left: -30px;
			width: 98px;
			height: 50px;
			clip-path: polygon(0 0, 56% 10%, 80% 100%, 0% 100%);
			background: #02364B;
			z-index: 2000;
		}
		&.two {
			top: 295px;
			left: 30px;
			width: 95px;
			height: 60px;
			clip-path: polygon(0 15%, 20% 10%, 100% 70%, 100% 100%, 0% 100%);
			background: #063B51;
			z-index: 1000;
		}
		&.three {
			top: 300px;
			left: 50px;
			width: 95px;
			height: 60px;
			clip-path: polygon(0 60%, 60% 20%, 100% 12%, 100% 100%, 0 100%);
			background: #002C44;
			z-index: 3000;
		}
		&.four {
			top: 255px;
			left: 125px;
			width: 60px;
			height: 65px;
			clip-path: polygon(0 100%, 20% 45%, 100% 12%, 100% 100%, 0 100%);
			background: #023A51;
			z-index: 4000;
		}
	}
}

.bubbleContainer {
	width: 100%;
	height: 100px;
	bottom: 0;
	position: absolute;
	animation-name: bubblesIn;
	animation-duration: 2s;
	animation-iteration-count: 1;
	animation-timing-function: linear;
}

@keyframes bubblesIn {
	0% {
		opacity: 0;
	}
	100% {
		opacity: 1;
	}
}

@for $i from 1 through 10 {
	$size: random(4) + 1 + px;

	.bubbleX#{$i} {
		display: inline-block;
		width: $size;
		height: $size;
		border-radius: 50%;
		background: #FFF;
		transform: translateX(0);
		animation-name: bubbleX#{$i};
		animation-duration: 4s;
		animation-iteration-count: infinite;
		animation-timing-function: linear;
	}
	.bubbleY#{$i} {
		display: inline-block;
		position: absolute;
		z-index: 5000;
		top: random(100) + px;
		left: random(156) + px;
		animation-name: bubbleY;
		animation-duration: 1.25s;
		animation-iteration-count: infinite;
		animation-timing-function: linear;
		transform: translateY(0);
		opacity: .6;
		animation-delay: random(3) + s;
	}
	@keyframes bubbleX#{$i} {
		0% { transform: translateX(0); }
		20% { transform: translateX(-random(15) + px) }
		40% { transform: translateX(random(15) + px) }
		60% { transform: translateX(-random(15) + px) }
		80% { transform: translateX(random(15) + px) }
		100% { transform: translateX(-random(15) + px); }
	}
	
	@keyframes bubbleY {
		0% {
			transform: translateY(0);
		}
		50% {
			transform: translateY(-30px);
		}
		100% {
			transform: translateY(-60px);
			opacity: 0;
		}
	}
}

.triangleContainer {
	margin-top: 92px;
	width: 1000px;
	position: absolute;
	z-index: 1000;
	transform: translateX(-250px);
	animation-name: triangles;
	animation-duration: 5s;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
}
.triangleBar {
	width: 1000px;
	height: 6px;
	position: absolute;
	z-index: 1500;
	background: linear-gradient(to bottom, #E7F9F3, #F5FFF9);
}
.triangle {
	width: 50px;
	height: 10px;
	display: inline-block;
	background: #EDF7E7;
	clip-path: polygon(0% 0%, 100% 0%, 50% 100%, 0% 0%);
}

@keyframes triangles {
	0% {
		transform: translateX(-250px);
	}
	100% {
		transform: translateX(-500px);
	}
}

.whaleContainer {
	position: relative;
	transform: translateX(0);
	animation-name: whaleTranslate;
	animation-duration: 10s;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
	z-index: 7000;
}
@keyframes whaleTranslate {
	0% {
		transform: translateX(0);
	}
	100% {
		transform: translateX(380px);
	}
}

.whalePos {
	position: absolute;
	z-index: 1000;
	&.size1 {
		top: 150px;
		left: -210px;
	}
	&.size2 {
		top: 100px;
		left: -280px;
	}
	&.size3 {
		top: 120px;
		left: -140px;
	}
	&.size4 {
		top: 190px;
		left: -310px;
	}
}
.whaleRotate {
	position: relative;
	width: 245px;
	height: 110px;
	animation-duration: 2s;
	animation-iteration-count: infinite;
	animation-direction: alternate;
	&.size1 {
		transform: rotate(0) scale(.35);
		animation-name: whaleMovementXLarge;
	}
	&.size2 {
		transform: rotate(0) scale(.25);
		animation-name: whaleMovementLarge;
	}
	&.size3 {
		transform: rotate(0) scale(.15);
		animation-name: whaleMovementMedium;
	}
	&.size4 {
		transform: rotate(0) scale(.1);
		animation-name: whaleMovementSmall;
	}
	
}
@keyframes whaleMovementXLarge {
	0% {
		transform: rotate(0) scale(.35);
	}
	100% {
		transform: rotate(10deg) scale(.35);
	}
}
@keyframes whaleMovementLarge {
	0% {
		transform: rotate(0) scale(.25);
	}
	100% {
		transform: rotate(10deg) scale(.25);
	}
}
@keyframes whaleMovementMedium {
	0% {
		transform: rotate(0) scale(.15);
	}
	100% {
		transform: rotate(10deg) scale(.15);
	}
}
@keyframes whaleMovementSmall {
	0% {
		transform: rotate(0) scale(.1);
	}
	100% {
		transform: rotate(10deg) scale(.1);
	}
}
.whale {
	position: absolute;
	width: inherit;
	height: inherit;
	background: radial-gradient(at 40% 20%, #95d6df 0%,#95d6df 35%,#6db3c2 35%,#6db3c2 60%,#6db3c2 70%,#407a8b 70%,#407a8b 100%);
	clip-path: polygon(15% 0%, 18.5% 20%, 19% 37%, 27% 46.5%, 33% 46.5%, 42.5% 37%, 43% 26.5%, 50.5% 28.5%, 65.5% 17%, 88.5% 12.5%, 97.5% 22.5%, 100% 49.5%, 97% 65.5%, 89.5% 81.5%, 64.5% 86.5%, 43.5% 80%, 23% 59.5%, 15.5% 41.5%, 8% 40%, 1.5% 28.5%, 6.5% 25%, 12.5% 26.5%, 12% 14%);
}

.fin {
	position: absolute;
	top: 75%;
	left: 50%;
	z-index: 5000;
	width: 50px;
	height: 30px;
	background: #407A8B;
	transform-origin: center top;
	clip-path: polygon(30% 50%, 60% 0, 100% 0%, 80% 60%, 60% 80%, 0 100%);
	animation-name: fin;
	animation-duration: 2s;
	animation-iteration-count: infinite;
	animation-direction: alternate;
	animation-timing-function: linear;
}

@keyframes fin {
	0% {
		transform: rotate3d(0, 0, 0, 0deg);
	}
	100% {
		transform: rotate3d(1, 1, 1, 30deg);
	}
}



// floof
html, body {
	overflow: hidden;
}
body {
	background: #E6FFFF;
	width: 100vw;
	height: 100vh;
	display: flex;
	align-items: center;
  justify-content: center;
}
View Compiled
// Inspired by an article called 100 days of design by Tiantian Xu
// https://uxdesign.cc/100-days-of-motion-design-463526af852f 

External CSS

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External JavaScript

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