If you need more sea based creatures for your plushie aquarium, I do Narwhals: https://ko-fi.com/s/ec148be1dc
A bulbous pastel yellow Narwhal plushie with big round cartoon eyes, a white spiral horn, yellow front flippers, a white belly and a dinky fluke/tail.
A very plump, purple plush Narwhal in side profile. They have two front flippers, a short little finned tail, big cartoonish neatly stitched black eyes with white eyeshines, and a white spiral horn.