Keep this seal smiling. 😊 . Seals and other marine mammals in U.S. waters rely on the Marine Mammal Protection Act to stay safe from harmful human activity. Currently, oil special interests in Congress threaten these protections. Speak up today and tell Congress to #DefendMarineMammals. Link in bio. . 📸: Lenka Gondova / Shutterstock

Some happy dolphins to brighten your day. ☀️ . Common bottlenose dolphins are social creatures! They use individualized whistles to communicate information regarding their location, condition and identity with each other. Learn more at OCEANA.ORG/MARINE-LIFE . 📸: Susy Baels / Shutterstock

Saying hello for #ManateeMonday! 💙 . 📸: Gary Powell / Shutterstock

Whale, hello there baby humpback. 🐳 . Humpback whales can be found all over the world, living from Antarctica to the Arctic and from the coast to the open ocean. These whales can live up to 90 years old! Many humpback whale populations have recovered thanks to protections like those Oceana campaigns for. Learn more about whales and how you can help protect them at OCEANA.ORG/MARINE-LIFE. . 📸: Joost van Uffelen / Shutterstock #humpbackwhale #whale #marinelife

A single ingested piece of plastic can kill a sea turtle. . @Amazon can help protect sea turtles from plastic pollution by offering customers a plastic-free packaging choice at checkout. Urge #Amazon to help save our oceans by following the link in bio. #PlasticFreeAmazon . 📸: koo_chan / Shutterstock

Meet the largest predatory fish in the world, the great white shark. 🦈 . Great white sharks are known to be aggressive predators with extremely muscular bodies, capable of chasing down some of the fastest swimmers in the ocean. Learn more in our Marine Life Encyclopedia at OCEANA.ORG/MARINE-LIFE . 📸: Ramon Carretero / Shutterstock #shark #greatwhiteshark #fish

#Smiling because there’s another day of the weekend! 😄 🐠 . 📸: Yann Hubert / Shutterstock

Meet the sea bunny! 🐇 This nudibranch has rabbit-like "ears" that are actually sensory organs detecting chemicals in the water. . Nudibranchs and other marine species depend on healthy marine habitats to survive. Each year, approximately 17.6 billion pounds of plastic pollute the marine environment and these habitats. You can help protect our oceans and marine life from plastic pollution at OCEANA.ORG/PLASTICS #PlasticFreeSeas . 📷: mintosk / Shutterstock

Show some love for orcas today. 💙 . Orcas and other marine mammals in U.S. waters rely on the Marine Mammal Protection Act. Sadly, oil special interests in Congress threaten these protections. Speak up today to #DefendMarineMammals. Link in bio. . 📸: Daniel Toh / Shutterstock

Meet the octopus that got its name from the famous flying elephant. 🐘 . Dumbo octopuses are the deepest dwelling of all octopuses. They can live in depths up to 13,100 feet and potentially even deeper. Despite living in such extreme depths, dumbo octopuses and their habitat are polluted by throwaway plastics. Learn more about dumbo octopuses and how you can help protect them at OCEANA.ORG/MARINE-LIFE . 📸: NOAA

Raise your hand if you’re excited for the weekend! ✋ . 📸: Dolores M. Harvey / Shutterstock

The great hammerhead shark is the largest of all nine hammerhead species. The longest great hammerhead shark ever recorded was 20 feet long. . Unfortunately, like other shark species, hammerheads are threatened by the gruesome global shark fin trade. You can help protect great hammerheads and other sharks right now by telling the U.S. Senate to pass a #FinBanNow at OCEANA.ORG/FINBANNOW . 📸: Tomas Kotouc / Shutterstock